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Custom Pulley Program
 
Unlimited design freedom. Pulleys customized to fit specific applications; designed to meet made-to-print custom pulley requirements.
Available options:  

Gates Mectrol PDF File Industrial Timing Belt Catalog 

Material

  • Aluminum               
  • Steel               
  • Stainless steel 
  Flanges
  • Zinc plated steel                
  • Stainless steel
    (for stainless steel pulleys)
     

Coatings

  • Clear anodize
  • Black anodize
  • Clear hardcoat
  • Black oxide
  • Electroless nickel
 

Optional Pitches 

  • Most pitches can be supplied as zero backlash 
    • Typically used for precise positioning applications only 

Pulley Types 

2F – Two Flanges 
0F – No Flanges 

Pulley_2Flanges

 

Pulley-0Flange


V-Guides

For wider belts, and larger pulleys without flanges, one of the following V-guides is recommended for improved tracking:

For Metric Pitch Belts 

For Imperial Pitch Belts 
V-Guides_Metric   V-Guides_Imperial
 
 

Standard Keyway Dimensions and Tolerances 

Pulley ImperialShaft

Imperial Shaft Diameter      
           
Over Up to and Including Width wk Tolerance wk Depth hk Tolerance hk
  0.438 0.094   0.047  
0.438 0.563 0.125 +0.003 0.063  
0.563 0.875 0.188 -0.0000 0.094  
0.875 1.250 0.250   0.125  
1.250 1.375 0.313   0.156 +0.015
1.375 1.750 0.375 +0.0035 0.188 -0
1.750 2.250 0.500 -0 0.250  
2.250 2.750 0.625   0.313  
2.750 3.250 0.750 +0.004 0.375  
3.250 3.750 0.875 -0 0.438  
3.750 4.500 1.000   0.500  
4.500 5.500 1.125 +0.005 0.625  
5.500 6.500 1.500 -0 0.750  

Pulley MetricShaft
Metric Shaft Diameter      
           
Over Up to and Including Width b Tolerance on b Depth t2 Tolerance t2
6 8 2 +0.06 1.0  
8 10 3 +0.02 1.4 +0.1
10 12 4 +0.078 1.8 -0
12 17 5 +0.03 2.3  
17 22 6   2.8  
22 30 8 +0.098 3.3  
30 38 10 +0.04 3.3  
38 44 12   3.3  
44 50 14 +0.12 3.8 +0.2
50 58 16 +0.05 4.3 -0
58 65 18   4.4  
65 75 20   4.9  
75 85 22 +0.149 5.4  
85 95 25 +0.065 5.4  
95 110 28   6.4  
110 130 32   7.4  
130 150 36 +0.18 8.4 +0.3
150 170 40 +0.08 9.4 -0
           
* Metric keyway depths are specified from the bottom of the keyway to a line tangent to the bore at the keyway centerline.
           
T=Bore Diameter + t2      

 


 
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