Gears - Spur - Standard - 12DP Steel - 20 Deg PA

Gears -> Spur -> Standard -> 12DP Steel -> 20 Deg PA

There is only 1 product in the sub-categories of Gears - Spur - Standard - 12DP Steel - 20 Deg PA. Browse the Gears - Spur - Standard - 12DP Steel - 20 Deg PA products table.

Category Details

A selection of 20 Deg PA 12DP Steel Standard Spur Gears. PCD in mm = No. of Teeth x 2.117 (1/12 in.). 20 Degree Pressure Angle. DP stands for Diametrical Pitch and is an imperial measurement system.

  • The diameter increases by 1 inch for every 12 teeth
  • 12 Diametrical Pitch. Approx 6.65mm between the teeth.

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Gears - Spur - Standard - 12DP Steel - 20 Deg PA category on the Small Parts & Bearings online store.
Number of Teeth Pitch Circle Diameter (PD) Bore (d) Outside Diameter (OD) Face Width (FW) Type Indicative
Image
Spur Gears - 120 tooth - 255x25.4 mm Hubbed - Cast Iron ASTM-CLASS 30 Gear
Number of Teeth
120

Pitch Circle Diameter (PD)
255.0
mm

(Equiv. 10.039 in.)
Bore (d)
25.4
mm

(Equiv. 1 in.)
Face Width (FW)
25.4
mm
Type
Hubbed
Spur Gears - 120 tooth - 255x25.4 mm Hubbed - Cast Iron ASTM-CLASS 30 Gear
Material: Cast Iron ASTM-CLASS 30    Hub Diameter (D1): 63.5 mm    Hub Projection (HL): 22.35 mm    Locking Method: None    Quality: Commercial   
Part Number: G255B-120-D12-254-254-CI-G (Each)
Out of Stock | Backorder Now | Orders can be expected around Sun, Jan 18, 2026
$1,191.86 AUD
$1,430.24 AUD $1,191.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.
Number of Teeth Pitch Circle Diameter (PD) Bore (d) Outside Diameter (OD) Indicative
Image
Spur Gears - 120 tooth - 255x25.4 mm Hubbed - Cast Iron ASTM-CLASS 30 Gear
Number of Teeth
120

Pitch Circle Diameter (PD)
255.0
mm

(Equiv. 10.039 in.)
Bore (d)
25.4
mm

(Equiv. 1 in.)
Spur Gears - 120 tooth - 255x25.4 mm Hubbed - Cast Iron ASTM-CLASS 30 Gear
Material: Cast Iron ASTM-CLASS 30    Face Width (FW): 25.4 mm    Type: Hubbed    Hub Diameter (D1): 63.5 mm    Hub Projection (HL): 22.35 mm    Locking Method: None    Quality: Commercial   
Part Number: G255B-120-D12-254-254-CI-G (Each)
Out of Stock | Backorder Now | Orders can be expected around Sun, Jan 18, 2026
$1,191.86 AUD
$1,430.24 AUD $1,191.86 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Backorder: Out of Stock.