Pulleys - Inch Timing - 12.700mm Pitch H - 50.8mm Wide - Through Bore

Pulleys -> Inch Timing -> 12.700mm Pitch H -> 50.8mm Wide -> Through Bore

There are 12 products in the sub-categories of Pulleys - Inch Timing - 12.700mm Pitch H - 50.8mm Wide - Through Bore. Browse the Pulleys - Inch Timing - 12.700mm Pitch H - 50.8mm Wide - Through Bore products table.

Category Details

A selection of Through Bore 50.8mm Wide 12.700mm Pitch H Inch Timing Pulleys. Timing Pulleys to suit H Series 12.700mm Pitch. Unfinished Bore.

  • Timing pulleys combined with timing belts, provide power transmission without slippage.
  • Timing pulleys are toothed pulleys used with timing belts to synchronize the movement of different mechanical components, ensuring precise timing and coordination.
  • Some uses for timing pulleys include 3D printers, CNC machines, robotics and automation components, textile machinery, office equipment such as scanners and copiers, and medical devices requiring precise movement control.
  • Steel and Cast Iron
  • No grub screw
  • Hub requires drilling and tapping
  • Bore requires machining to finished size

Miniature Bearings Australia - MBA Minibearings

Additional resources:


A more concise listing may be found in the Pulleys - Inch Timing - 12.700mm Pitch H - 50.8mm Wide - Through Bore category on the Small Parts & Bearings online store.
Number of Teeth Max Belt Width (W) Bore (d) Bore Type Indicative
Image
Number of Teeth
14

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 14 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 56.57 mm    Flange Diameter (FD): 62.5 mm    Overall Length: 73.8 mm    Hub Diameter (HD): 41.3    Locking Type: None   
Part Number: P-H-014-508FF-SB-N-0191U
Inch Timing Pulleys - 14 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$183.23 AUD
$183.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth Max Belt Width (W) Bore (d) Bore Type Indicative
Image
Number of Teeth
14

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 14 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 56.57 mm    Flange Diameter (FD): 62.5 mm    Overall Length: 73.8 mm    Hub Diameter (HD): 41.3    Locking Type: None   
Part Number: P-H-014-508FF-SB-N-0191U
Inch Timing Pulleys - 14 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$183.23 AUD
$183.23 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
16

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 16 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 64.65 mm    Flange Diameter (FD): 70.6 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 47.6    Locking Type: None   
Part Number: P-H-016-508FF-SB-N-0191U
Inch Timing Pulleys - 16 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$194.05 AUD
$232.85 AUD $194.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
16

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 16 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 64.65 mm    Flange Diameter (FD): 70.6 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 47.6    Locking Type: None   
Part Number: P-H-016-508FF-SB-N-0191U
Inch Timing Pulleys - 16 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$194.05 AUD
$232.85 AUD $194.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
17

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 17 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 68.69 mm    Flange Diameter (FD): 76.2 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 50.8    Locking Type: None   
Part Number: P-H-017-508FF-SB-N-0191U
Inch Timing Pulleys - 17 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$213.14 AUD
$255.76 AUD $213.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
17

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 17 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 68.69 mm    Flange Diameter (FD): 76.2 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 50.8    Locking Type: None   
Part Number: P-H-017-508FF-SB-N-0191U
Inch Timing Pulleys - 17 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$213.14 AUD
$255.76 AUD $213.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
18

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 18 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 72.73 mm    Flange Diameter (FD): 78.7 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 57.2    Locking Type: None   
Part Number: P-H-018-508FF-SB-N-0191U
Inch Timing Pulleys - 18 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$230.14 AUD
$276.16 AUD $230.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
18

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 18 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 72.73 mm    Flange Diameter (FD): 78.7 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 57.2    Locking Type: None   
Part Number: P-H-018-508FF-SB-N-0191U
Inch Timing Pulleys - 18 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$230.14 AUD
$276.16 AUD $230.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
19

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 19 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 76.77 mm    Flange Diameter (FD): 82.7 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 60.3    Locking Type: None   
Part Number: P-H-019-508FF-SB-N-0191U
Inch Timing Pulleys - 19 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$248.77 AUD
$298.53 AUD $248.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
19

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 19 tooth - 50.8x19.05 mm - Steel - Black Oxide
Material: Steel - Black Oxide    Type: 2    Pitch Dia. (PD): 76.77 mm    Flange Diameter (FD): 82.7 mm    Overall Length: 77.0 mm    Hub Diameter (HD): 60.3    Locking Type: None   
Part Number: P-H-019-508FF-SB-N-0191U
Inch Timing Pulleys - 19 tooth - 50.8x19.05 mm 12.700mm Pitch H - Steel - Black Oxide Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$248.77 AUD
$298.53 AUD $248.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
20

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 20 tooth - 50.8x19.05 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 80.81 mm    Flange Diameter (FD): 86.9 mm    Overall Length: 80.2 mm    Hub Diameter (HD): 63.5    Locking Type: None   
Part Number: P-H-020-508FF-CB-N-0191U
Inch Timing Pulleys - 20 tooth - 50.8x19.05 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$271.14 AUD
$325.36 AUD $271.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
20

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
19.050
mm

(Equiv. 0.75 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 20 tooth - 50.8x19.05 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 80.81 mm    Flange Diameter (FD): 86.9 mm    Overall Length: 80.2 mm    Hub Diameter (HD): 63.5    Locking Type: None   
Part Number: P-H-020-508FF-CB-N-0191U
Inch Timing Pulleys - 20 tooth - 50.8x19.05 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$271.14 AUD
$325.36 AUD $271.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
21

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 21 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 84.86 mm    Flange Diameter (FD): 90.8 mm    Overall Length: 80.2 mm    Hub Diameter (HD): 66.7    Locking Type: None   
Part Number: P-H-021-508FF-CB-N-0254U
Inch Timing Pulleys - 21 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$295.77 AUD
$354.93 AUD $295.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
21

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 21 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 84.86 mm    Flange Diameter (FD): 90.8 mm    Overall Length: 80.2 mm    Hub Diameter (HD): 66.7    Locking Type: None   
Part Number: P-H-021-508FF-CB-N-0254U
Inch Timing Pulleys - 21 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$295.77 AUD
$354.93 AUD $295.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
22

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 22 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 88.90 mm    Flange Diameter (FD): 94.9 mm    Overall Length: 83.3 mm    Hub Diameter (HD): 69.9    Locking Type: None   
Part Number: P-H-022-508FF-CB-N-0254U
Inch Timing Pulleys - 22 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$326.05 AUD
$391.25 AUD $326.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
22

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 22 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 88.90 mm    Flange Diameter (FD): 94.9 mm    Overall Length: 83.3 mm    Hub Diameter (HD): 69.9    Locking Type: None   
Part Number: P-H-022-508FF-CB-N-0254U
Inch Timing Pulleys - 22 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$326.05 AUD
$391.25 AUD $326.05 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
24

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 24 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 96.98 mm    Flange Diameter (FD): 102.9 mm    Overall Length: 83.3 mm    Hub Diameter (HD): 76.2    Locking Type: None   
Part Number: P-H-024-508FF-CB-N-0254U
Inch Timing Pulleys - 24 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$368.50 AUD
$442.20 AUD $368.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
24

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 24 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 96.98 mm    Flange Diameter (FD): 102.9 mm    Overall Length: 83.3 mm    Hub Diameter (HD): 76.2    Locking Type: None   
Part Number: P-H-024-508FF-CB-N-0254U
Inch Timing Pulleys - 24 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$368.50 AUD
$442.20 AUD $368.50 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
26

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 26 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 105.06 mm    Flange Diameter (FD): 111.0 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 85.7    Locking Type: None   
Part Number: P-H-026-508FF-CB-N-0254U
Inch Timing Pulleys - 26 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$433.41 AUD
$520.09 AUD $433.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
26

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 26 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 105.06 mm    Flange Diameter (FD): 111.0 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 85.7    Locking Type: None   
Part Number: P-H-026-508FF-CB-N-0254U
Inch Timing Pulleys - 26 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$433.41 AUD
$520.09 AUD $433.41 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
28

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 28 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 113.14 mm    Flange Diameter (FD): 119.1 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 88.9    Locking Type: None   
Part Number: P-H-028-508FF-CB-N-0254U
Inch Timing Pulleys - 28 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$482.77 AUD
$579.33 AUD $482.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
28

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 28 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 113.14 mm    Flange Diameter (FD): 119.1 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 88.9    Locking Type: None   
Part Number: P-H-028-508FF-CB-N-0254U
Inch Timing Pulleys - 28 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$482.77 AUD
$579.33 AUD $482.77 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
30

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 30 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 121.22 mm    Flange Diameter (FD): 127.1 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 92.1    Locking Type: None   
Part Number: P-H-030-508FF-CB-N-0254U
Inch Timing Pulleys - 30 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$528.14 AUD
$633.76 AUD $528.14 AUD
Each
Quantity Required

Backorder: Out of Stock.
Number of Teeth
30

Max Belt Width (W)
50.80
mm

(Equiv. 2 in.)
Bore (d)
25.400
mm

(Equiv. 1 in.)
Bore Type
Unfinished
Inch Timing Pulleys - 30 tooth - 50.8x25.4 mm - Cast Iron
Material: Cast Iron    Type: 2    Pitch Dia. (PD): 121.22 mm    Flange Diameter (FD): 127.1 mm    Overall Length: 86.5 mm    Hub Diameter (HD): 92.1    Locking Type: None   
Part Number: P-H-030-508FF-CB-N-0254U
Inch Timing Pulleys - 30 tooth - 50.8x25.4 mm 12.700mm Pitch H - Cast Iron Pulley
Out of Stock | Backorder Now | Orders can be expected around Thu, Oct 16, 2025
$528.14 AUD
$633.76 AUD $528.14 AUD
Each
Quantity Required

Backorder: Out of Stock.