Gears - Spur - Standard - 12DP Steel

6 Products in this selection
  • PCD in mm = No. of Teeth x 2.117 (1/12 in.). 14.5 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.
Additional resources:
12DP Gear Racks
A more concise listing may be found on the Smallparts store at Gears - Spur - Standard - 12DP Steel. Smallparts promote the most popular MBA products.
Teeth Pitch Circle Diameter (PD) Bore (d) Outside Diameter (OD) Face Width (FW) Type Indicative
Image
Teeth
12
Pitch Circle Diameter (PD)
25.400
mm

(1 in.)
Bore (d)
12.700
mm

(0.5 in.)
Outside Diameter (OD)
29.642
mm
Face Width (FW)
19.050
mm
Spur Gears - 12 tooth - 25.4x12.7 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Hub Diameter (D1): 19.050 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G025B-12-V12-191-127-CG Spur Gears - 12 tooth - 25.4x12.7 mm - Steel 0.20 carbon steel with no subsequent treatment
1 Available Immediately | Further orders can be expected around Mon, Jun 02, 2025
$149.05 AUD
$178.85 AUD $149.05 AUD
Each
Teeth Pitch Circle Diameter (PD) Bore (d) Outside Diameter (OD) Indicative
Image
Teeth
12
Pitch Circle Diameter (PD)
25.400
mm

(1 in.)
Bore (d)
12.700
mm

(0.5 in.)
Outside Diameter (OD)
29.642
mm
Spur Gears - 12 tooth - 25.4x12.7 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Face Width (FW): 19.050 mm    Hub Diameter (D1): 19.050 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G025B-12-V12-191-127-CG Spur Gears - 12 tooth - 25.4x12.7 mm - Steel 0.20 carbon steel with no subsequent treatment
1 Available Immediately | Further orders can be expected around Mon, Jun 02, 2025
$149.05 AUD
$178.85 AUD $149.05 AUD
Each
View the product page first if you are unsure.
Teeth
18
Pitch Circle Diameter (PD)
38.100
mm

(1.5 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
42.342
mm
Face Width (FW)
19.050
mm
Spur Gears - 18 tooth - 38.1x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Hub Diameter (D1): 29.210 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G038B-18-V12-191-159-CG Spur Gears - 18 tooth - 38.1x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$171.77 AUD
$171.77 AUD
Each
Teeth
18
Pitch Circle Diameter (PD)
38.100
mm

(1.5 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
42.342
mm
Spur Gears - 18 tooth - 38.1x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Face Width (FW): 19.050 mm    Hub Diameter (D1): 29.210 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G038B-18-V12-191-159-CG Spur Gears - 18 tooth - 38.1x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$171.77 AUD
$171.77 AUD
Each
View the product page first if you are unsure.
Teeth
24
Pitch Circle Diameter (PD)
50.800
mm

(2 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
55.042
mm
Face Width (FW)
19.050
mm
Spur Gears - 24 tooth - 50.8x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Hub Diameter (D1): 41.910 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G051B-24-V12-191-159-CG Spur Gears - 24 tooth - 50.8x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$245.14 AUD
$245.14 AUD
Each
Teeth
24
Pitch Circle Diameter (PD)
50.800
mm

(2 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
55.042
mm
Spur Gears - 24 tooth - 50.8x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Face Width (FW): 19.050 mm    Hub Diameter (D1): 41.910 mm    Hub Projection (HL): 12.700 mm    Locking Method: None    Quality: Commercial   
Part Number: G051B-24-V12-191-159-CG Spur Gears - 24 tooth - 50.8x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$245.14 AUD
$245.14 AUD
Each
View the product page first if you are unsure.
Teeth
30
Pitch Circle Diameter (PD)
63.500
mm

(2.5 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
67.742
mm
Face Width (FW)
19.050
mm
Spur Gears - 30 tooth - 63.5x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Hub Diameter (D1): 54.610 mm    Hub Projection (HL): 15.748 mm    Locking Method: None    Quality: Commercial   
Part Number: G064B-30-V12-191-159-CG Spur Gears - 30 tooth - 63.5x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$296.32 AUD
$296.32 AUD
Each
Teeth
30
Pitch Circle Diameter (PD)
63.500
mm

(2.5 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
67.742
mm
Spur Gears - 30 tooth - 63.5x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Face Width (FW): 19.050 mm    Hub Diameter (D1): 54.610 mm    Hub Projection (HL): 15.748 mm    Locking Method: None    Quality: Commercial   
Part Number: G064B-30-V12-191-159-CG Spur Gears - 30 tooth - 63.5x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$296.32 AUD
$296.32 AUD
Each
View the product page first if you are unsure.
Teeth
32
Pitch Circle Diameter (PD)
67.742
mm

(2.667 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
71.984
mm
Face Width (FW)
19.050
mm
Spur Gears - 32 tooth - 67.742x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Hub Diameter (D1): 48.768 mm    Hub Projection (HL): 15.748 mm    Locking Method: None    Quality: Commercial   
Part Number: G068B-32-V12-191-159-CG Spur Gears - 32 tooth - 67.742x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$327.68 AUD
$327.68 AUD
Each
Teeth
32
Pitch Circle Diameter (PD)
67.742
mm

(2.667 in.)
Bore (d)
15.875
mm

(0.625 in.)
Outside Diameter (OD)
71.984
mm
Spur Gears - 32 tooth - 67.742x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Material: Steel 0.20 carbon steel with no subsequent treatment    Face Width (FW): 19.050 mm    Hub Diameter (D1): 48.768 mm    Hub Projection (HL): 15.748 mm    Locking Method: None    Quality: Commercial   
Part Number: G068B-32-V12-191-159-CG Spur Gears - 32 tooth - 67.742x15.875 mm - Steel 0.20 carbon steel with no subsequent treatment
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$327.68 AUD
$327.68 AUD
Each
View the product page first if you are unsure.
Teeth
48
Pitch Circle Diameter (PD)
101.600
mm

(4 in.)
Bore (d)
19.050
mm

(0.75 in.)
Outside Diameter (OD)
105.842
mm
Face Width (FW)
19.050
mm
Spur Gears - 48 tooth - 101.6x19.05 mm - Cast Iron ASTM-CLASS 30
Material: Cast Iron ASTM-CLASS 30    Hub Diameter (D1): 44.450 mm    Hub Projection (HL): 19.050 mm    Locking Method: None    Quality: Commercial   
Part Number: G102B-48-V12-191-191-CI-G Spur Gears - 48 tooth - 101.6x19.05 mm - Cast Iron ASTM-CLASS 30
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$431.86 AUD
$431.86 AUD
Each
Teeth
48
Pitch Circle Diameter (PD)
101.600
mm

(4 in.)
Bore (d)
19.050
mm

(0.75 in.)
Outside Diameter (OD)
105.842
mm
Spur Gears - 48 tooth - 101.6x19.05 mm - Cast Iron ASTM-CLASS 30
Material: Cast Iron ASTM-CLASS 30    Face Width (FW): 19.050 mm    Hub Diameter (D1): 44.450 mm    Hub Projection (HL): 19.050 mm    Locking Method: None    Quality: Commercial   
Part Number: G102B-48-V12-191-191-CI-G Spur Gears - 48 tooth - 101.6x19.05 mm - Cast Iron ASTM-CLASS 30
Out of Stock | Backorder Now | Orders can be expected around Mon, Jun 02, 2025
$431.86 AUD
$431.86 AUD
Each
View the product page first if you are unsure.