Bore Diameter Tolerances
(Always on plus side. Minus=.000")
| Bore Diameters | Tolerance -.000" |
| Up to 2" | +.002" |
| 2" to 3" | +.003" |
| Over 3" | +.004" |
Closer than standard bore tolerances listed above can be had at additional cost depend-
ing upon tolerance and finish desired.
Face Run Out
(On Type A plate sprockets.)
| Outside
Diameter |
Indicator
Reading |
| Up to 12" | .030" |
| 12" to 18" | .050" |
| 18" to 24" | .080" |
| 24" and Over | .125" |
Eccentricity
(Measured from Bore to bottom of Teeth)
| Bottom
Diameters |
Indicator
Reading |
| Up to 4" | .006" |
| 4" to 5" | .008" |
| 5" to 7" | .010" |
| 7" to 9" | .012" |
| 9" to 11" | .014" |
| 11" to 13" | .016" |
| 13" to 15" | .018" |
| 15" to 20" | .020" |
| 20" to 25" | .024" |
| 25" to 35" | .026" |
| 35" to 45" | .028" |
| 45" to 60" | .032" |
| 60" to 75" | .040" |
| 75" to 100" | .048" |
Plate Thickness
(On Type A plate sprockets)
| Chain
No. |
Pitch
Inches |
Plate
Thickness |
Tolerance | |
| 35 | 3/8 | .168" | +.006" | -.027" |
| 40 | 1/2 | .284" | +.006" | -.035" |
| 41 | 1/2 | .227" | +.006" | -.035" |
| 50 | 5/8 | .343" | +.007" | -.036" |
| 60 | 3/4 | .459" | +.009" | -.036" |
| 80 | 1 | .575" | +.015" | -.040" |
| 100 | 1-1/4 | .692" | +.020" | -.046" |
| 120 | 1-1/2 | .924" | +.024" | -.057" |
| 140 | 1-3/4 | .924" | +.024" | -.057" |
| 160 | 2 | 1.156" | +.035" | -.062" |
| 180 | 2-1/4 | 1.301" | +.040" | -.068" |
| 200 | 2-1/2 | 1.389" | +.050" | -.070" |
| 240 | 3 | 1.738" | +.062" | -.080" |
Standard Keyways & Standard Setscrews
| Shaft
Diameters |
Keyway
Width & Depth |
Setscrew |
| 1/2" to 9/16" | 1/8" x 1/16" | 1/4" NC |
| 5/8" to 7/8" | 3/16" x 3/32" | 1/4" NC |
| 15/16" to 1-1/4" | 1/4" x 1/8" | 1/4" NC |
| 1-5/16" to 1-3/8" | 5/16" x 5/32" | 5/16" NC |
| 1-7/16" to 1-3/4" | 3/8" x 3/16" | 3/8" NC |
| 1-13/16" to 2-1/4" | 1/2" x 1/4" | 1/2" NC |
| 2-5/16" to 2-3/4" | 5/8" x 5/16" | 5/8" NC |
| 2-13/16" to 3-1/4" | 3/4" x 3/8" | 3/4" NC |
| 3-5/16" to 3-3/4" | 7/8" x 7/16" | 7/8" NC |
| 3-13/16" x 4-1/2" | 1" x 1/2" | 1" NC |
| 4-9/16" to 5-1/2" | 1-1/4" x 5/8" | 1" NC |
| 5-9/16" to 6-1/2" | 1-1/2" x 3/4" | 1" NC |
| 6-9/16" to 7-1/2" | 1-3/4" x 5/8" ** | 1" NC |
| 7-9/16" to 8-15/16" | 2" x 3/4" ** | 1" NC |
**Standard Flat Keyways.