Collection: Bearings - Single Row Ball - Unflanged - Precision - Chrome Steel

Bearings -> Single Row Ball -> Unflanged -> Precision -> Chrome Steel
ID (d) OD (D) Width (B) Inner Ring Width (Bn) Flange Diameter (DF) Flange Width (BF) Indicative
Image
ID (d)
3.500
mm

(Equiv. 0.138 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 3.5x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR935-ZZ-ECO (10 Pcs)
Single Row Ball Bearings - 3.5x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
88 units (880 pcs) Available Now | Item Discontinued - Up to 88 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Excludes GST and overseas Taxes & Duties
Per 10
Quantity Required

88 units (880 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d) OD (D) Width (B) Inner Ring Width (Bn) Indicative
Image
ID (d)
3.500
mm

(Equiv. 0.138 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 3.5x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR935-ZZ-ECO (10 Pcs)
Single Row Ball Bearings - 3.5x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
88 units (880 pcs) Available Now | Item Discontinued - Up to 88 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Excludes GST and overseas Taxes & Duties
Per 10
Quantity Required

88 units (880 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
3.969
mm
+ 0.000 / - 0.007
(Equiv. 0.156 in.)
OD (D)
7.938
mm
+ 0.000 / - 0.007
(Equiv. 0.313 in.)
Width (B)
3.175
mm
+ 0.000 / - 0.120
(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZS    Bearing Type: Radial   
Part Number: R155A-ZZS-MC3-JP6 (20 Pcs)
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $149.95 AUD
Regular price $179.95 AUD Sale price $149.95 AUD
Excludes GST and overseas Taxes & Duties
Per 20
Quantity Required

Backorder: Out of Stock.
ID (d)
3.969
mm
+ 0.000 / - 0.007
(Equiv. 0.156 in.)
OD (D)
7.938
mm
+ 0.000 / - 0.007
(Equiv. 0.313 in.)
Width (B)
3.175
mm
+ 0.000 / - 0.120
(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZS    Bearing Type: Radial   
Part Number: R155A-ZZS-MC3-JP6 (20 Pcs)
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $149.95 AUD
Regular price $179.95 AUD Sale price $149.95 AUD
Excludes GST and overseas Taxes & Duties
Per 20
Quantity Required

Backorder: Out of Stock.
ID (d)
3.969
mm
+ 0.000 / - 0.0075
(Equiv. 0.156 in.)
OD (D)
7.938
mm
+ 0.000 / - 0.0075
(Equiv. 0.313 in.)
Width (B)
3.175
mm
+ 0.000 / - 0.125
(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZS    Bearing Type: Radial   
Part Number: R155A-ZZS-MC3 (20 Pcs)
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $149.95 AUD
Regular price $179.95 AUD Sale price $149.95 AUD
Excludes GST and overseas Taxes & Duties
Per 20
Quantity Required

Backorder: Out of Stock.
ID (d)
3.969
mm
+ 0.000 / - 0.0075
(Equiv. 0.156 in.)
OD (D)
7.938
mm
+ 0.000 / - 0.0075
(Equiv. 0.313 in.)
Width (B)
3.175
mm
+ 0.000 / - 0.125
(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZS    Bearing Type: Radial   
Part Number: R155A-ZZS-MC3 (20 Pcs)
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $149.95 AUD
Regular price $179.95 AUD Sale price $149.95 AUD
Excludes GST and overseas Taxes & Duties
Per 20
Quantity Required

Backorder: Out of Stock.
ID (d)
3.969
mm

(Equiv. 0.156 in.)
OD (D)
7.938
mm

(Equiv. 0.313 in.)
Width (B)
3.175
mm

(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: TTS    Bearing Type: Radial   
Part Number: R155A-TTS-ECO
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
320 Available Now | Item Discontinued - Up to 320 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.00 AUD
Regular price $5.70 AUD Sale price $3.00 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

320 Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
3.969
mm

(Equiv. 0.156 in.)
OD (D)
7.938
mm

(Equiv. 0.313 in.)
Width (B)
3.175
mm

(Equiv. 0.125 in.)
Single Row Ball Bearings - 3.969x7.938x3.175 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: TTS    Bearing Type: Radial   
Part Number: R155A-TTS-ECO
Single Row Ball Bearings - 3.969x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing
320 Available Now | Item Discontinued - Up to 320 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.00 AUD
Regular price $5.70 AUD Sale price $3.00 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

320 Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.276 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.125
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x7x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: MR74-MC3-AF12 (50 Pcs)
Single Row Ball Bearings - 4x7x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.276 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.125
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x7x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: MR74-MC3-AF12 (50 Pcs)
Single Row Ball Bearings - 4x7x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.007
(Equiv. 0.276 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.120
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x7x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: Open    Bearing Type: Radial   
Part Number: MR74-MC3-JP6-AF12 (50 Pcs)
Single Row Ball Bearings - 4x7x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.007
(Equiv. 0.276 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.120
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x7x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: Open    Bearing Type: Radial   
Part Number: MR74-MC3-JP6-AF12 (50 Pcs)
Single Row Ball Bearings - 4x7x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
7.000
mm

(Equiv. 0.276 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RB    Bearing Type: Radial   
Part Number: MR74A-2RB-ECO (2 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
15 units (30 pcs) Available Now | Item Discontinued - Up to 15 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $4.39 AUD
Regular price $5.27 AUD Sale price $4.39 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

15 units (30 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
7.000
mm

(Equiv. 0.276 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RB    Bearing Type: Radial   
Part Number: MR74A-2RB-ECO (2 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
15 units (30 pcs) Available Now | Item Discontinued - Up to 15 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $4.39 AUD
Regular price $5.27 AUD Sale price $4.39 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

15 units (30 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.007
(Equiv. 0.276 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.120
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR74A-ZZS-MC3-JP6 (50 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.007
(Equiv. 0.276 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.120
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR74A-ZZS-MC3-JP6 (50 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $290.59 AUD
Regular price $348.71 AUD Sale price $290.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.276 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR74A-ZZS-MC3
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
260 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $4.14 AUD
Regular price Sale price $4.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

260 Available Now. Backorder if more than 260.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
7.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.276 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR74A-ZZS-MC3
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
260 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $4.14 AUD
Regular price Sale price $4.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

260 Available Now. Backorder if more than 260.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
7.000
mm

(Equiv. 0.276 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR74A-ZZ-ECO (5 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
30 units (150 pcs) Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $7.77 AUD
Regular price Sale price $7.77 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

30 units (150 pcs) Available Now. Backorder if more than 30.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
7.000
mm

(Equiv. 0.276 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x7x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR74A-ZZ-ECO (5 Pcs)
Single Row Ball Bearings - 4x7x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
30 units (150 pcs) Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $7.77 AUD
Regular price Sale price $7.77 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

30 units (150 pcs) Available Now. Backorder if more than 30.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.125
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x8x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: MR84-MC3-AF12 (50 Pcs)
Single Row Ball Bearings - 4x8x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $268.59 AUD
Regular price $322.31 AUD Sale price $268.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (B)
2.000
mm
+ 0.000 / - 0.125
(Equiv. 0.079 in.)
Single Row Ball Bearings - 4x8x2 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: MR84-MC3-AF12 (50 Pcs)
Single Row Ball Bearings - 4x8x2 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $268.59 AUD
Regular price $322.31 AUD Sale price $268.59 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (B)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR84A-ZZ-MC3-JP6 (50 Pcs)
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $268.86 AUD
Regular price $322.64 AUD Sale price $268.86 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.007
(Equiv. 0.315 in.)
Width (B)
3.000
mm
+ 0.000 / - 0.120
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR84A-ZZ-MC3-JP6 (50 Pcs)
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $268.86 AUD
Regular price $322.64 AUD Sale price $268.86 AUD
Excludes GST and overseas Taxes & Duties
Per 50
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (B)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR84A-ZZ-MC3
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
253 Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $4.32 AUD
Regular price Sale price $4.32 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

253 Available Now. Backorder if more than 253.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
8.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.315 in.)
Width (B)
3.000
mm
+ 0.000 / - 0.125
(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: MR84A-ZZ-MC3
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
253 Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $4.32 AUD
Regular price Sale price $4.32 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

253 Available Now. Backorder if more than 253.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
8.000
mm

(Equiv. 0.315 in.)
Width (B)
3.000
mm

(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR84A-ZZS-ECO (5 Pcs)
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
40 units (200 pcs) Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $4.68 AUD
Regular price Sale price $4.68 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

40 units (200 pcs) Available Now. Backorder if more than 40.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
8.000
mm

(Equiv. 0.315 in.)
Width (B)
3.000
mm

(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x8x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR84A-ZZS-ECO (5 Pcs)
Single Row Ball Bearings - 4x8x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
40 units (200 pcs) Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $4.68 AUD
Regular price Sale price $4.68 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

40 units (200 pcs) Available Now. Backorder if more than 40.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
8.000
mm

(Equiv. 0.315 in.)
Width (B)
5.000
mm

(Equiv. 0.197 in.)
Single Row Ball Bearings - 4x8x5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR84D-ZZS-ECO
Single Row Ball Bearings - 4x8x5 mm Unflanged - Chrome Steel SAE 52100 Bearing
16 Available Now | Item Discontinued - Up to 16 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

16 Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
8.000
mm

(Equiv. 0.315 in.)
Width (B)
5.000
mm

(Equiv. 0.197 in.)
Single Row Ball Bearings - 4x8x5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: MR84D-ZZS-ECO
Single Row Ball Bearings - 4x8x5 mm Unflanged - Chrome Steel SAE 52100 Bearing
16 Available Now | Item Discontinued - Up to 16 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $8.00 AUD
Regular price $15.20 AUD Sale price $8.00 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

16 Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684-ZZS-ECO
Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
19 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $2.14 AUD
Regular price Sale price $2.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

19 Available Now. Backorder if more than 19.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
2.500
mm

(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684-ZZS-ECO
Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
19 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $2.14 AUD
Regular price Sale price $2.14 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

19 Available Now. Backorder if more than 19.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: 684-MC3-AF12
Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
1 Available Now | More stock due: 100 around Mon, Oct 06, 2025 | Further orders can be expected around Fri, Oct 17, 2025
Regular price $4.41 AUD
Regular price Sale price $4.41 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

1 Available Now. Backorder if more than 1.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
2.500
mm
+ 0.000 / - 0.125
(Equiv. 0.098 in.)
Single Row Ball Bearings - 4x9x2.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: Open    Bearing Type: Radial   
Part Number: 684-MC3-AF12
Single Row Ball Bearings - 4x9x2.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
1 Available Now | More stock due: 100 around Mon, Oct 06, 2025 | Further orders can be expected around Fri, Oct 17, 2025
Regular price $4.41 AUD
Regular price Sale price $4.41 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

1 Available Now. Backorder if more than 1.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
3.000
mm

(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x9x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684D-ZZS-ECO
Single Row Ball Bearings - 4x9x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
Contact Us | Special Order Only - Please contact us if you need a large quantity
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
3.000
mm

(Equiv. 0.118 in.)
Single Row Ball Bearings - 4x9x3 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684D-ZZS-ECO
Single Row Ball Bearings - 4x9x3 mm Unflanged - Chrome Steel SAE 52100 Bearing
Contact Us | Special Order Only - Please contact us if you need a large quantity | Orders can be expected around Thu, Jun 08, 2028
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684B-ZZ-MC3
Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
270 Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $5.86 AUD
Regular price Sale price $5.86 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

270 Available Now. Backorder if more than 270.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
3.500
mm
+ 0.000 / - 0.125
(Equiv. 0.138 in.)
Single Row Ball Bearings - 4x9x3.5 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684B-ZZ-MC3
Single Row Ball Bearings - 4x9x3.5 mm Unflanged - Chrome Steel SAE 52100 Bearing
270 Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $5.86 AUD
Regular price Sale price $5.86 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

270 Available Now. Backorder if more than 270.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684A-ZZS-ECO (5 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
4 units (20 pcs) Available Now | Item Discontinued - Up to 4 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.49 AUD
Regular price $6.45 AUD Sale price $3.49 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

4 units (20 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: ZZS    Bearing Type: Radial   
Part Number: 684A-ZZS-ECO (5 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
4 units (20 pcs) Available Now | Item Discontinued - Up to 4 may be ordered online. No backorders. Please contact us if you need a larger quantity
Regular price $3.49 AUD
Regular price $6.45 AUD Sale price $3.49 AUD
Excludes GST and overseas Taxes & Duties
Per 5
Quantity Required

4 units (20 pcs) Available Now. These are priced to quit. Please contact us for a quote if you require more.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RS    Bearing Type: Radial   
Part Number: 684A-2RS-ECO
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Oct 20, 2025
Regular price $4.50 AUD
Regular price Sale price $4.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RS    Bearing Type: Radial   
Part Number: 684A-2RS-ECO
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Mon, Oct 20, 2025
Regular price $4.50 AUD
Regular price Sale price $4.50 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RB    Bearing Type: Radial   
Part Number: 684A-2RB-ECO
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
750 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

750 Available Now. Backorder if more than 750.
ID (d)
4.000
mm

(Equiv. 0.157 in.)
OD (D)
9.000
mm

(Equiv. 0.354 in.)
Width (B)
4.000
mm

(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Economy    Closure Type: 2RB    Bearing Type: Radial   
Part Number: 684A-2RB-ECO
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
750 Available Now | Further orders can be expected around Sat, Oct 11, 2025
Regular price $2.23 AUD
Regular price Sale price $2.23 AUD
Excludes GST and overseas Taxes & Duties
Each
Quantity Required

750 Available Now. Backorder if more than 750.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
4.000
mm
+ 0.000 / - 0.125
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684A-ZZ-MC3 (2 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
299 units (598 pcs) Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $6.95 AUD
Regular price Sale price $6.95 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

299 units (598 pcs) Available Now. Backorder if more than 299.
ID (d)
4.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.0075
(Equiv. 0.354 in.)
Width (B)
4.000
mm
+ 0.000 / - 0.125
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: Abec 1    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684A-ZZ-MC3 (2 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
299 units (598 pcs) Available Now | Further orders can be expected around Fri, Oct 17, 2025
Regular price $6.95 AUD
Regular price Sale price $6.95 AUD
Excludes GST and overseas Taxes & Duties
Per 2
Quantity Required

299 units (598 pcs) Available Now. Backorder if more than 299.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (B)
4.000
mm
+ 0.000 / - 0.120
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684A-ZZ-MC3-JP6 (100 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $453.23 AUD
Regular price $543.87 AUD Sale price $453.23 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.
ID (d)
4.000
mm
+ 0.000 / - 0.007
(Equiv. 0.157 in.)
OD (D)
9.000
mm
+ 0.000 / - 0.007
(Equiv. 0.354 in.)
Width (B)
4.000
mm
+ 0.000 / - 0.120
(Equiv. 0.157 in.)
Single Row Ball Bearings - 4x9x4 mm - Chrome Steel SAE 52100
Material: Chrome Steel SAE 52100    Precision Grade: P6    Closure Type: ZZ    Bearing Type: Radial   
Part Number: 684A-ZZ-MC3-JP6 (100 Pcs)
Single Row Ball Bearings - 4x9x4 mm Unflanged - Chrome Steel SAE 52100 Bearing
Out of Stock | Backorder Now | Orders can be expected around Fri, Oct 17, 2025
Regular price $453.23 AUD
Regular price $543.87 AUD Sale price $453.23 AUD
Excludes GST and overseas Taxes & Duties
Per 100
Quantity Required

Backorder: Out of Stock.