Standards & Tolerances

Production Time Options: Click here for more info.	Crisis	Urgent	Critical	Quick	Standard
Production Time Options: Click here for more info.	48 Hours	72 Hours	1 Week	2 Weeks	3 Weeks

Production Time Options: Click here for more info.
Crisis	48 Hours
Urgent	72 Hours
Critical	1 Week
Quick	2 Weeks
Standard	3 Weeks

*Standards and tolerances have been established to ensure our customers get consistently accurate, dependable parts.

Backlash - Our gears are cut to operate on standard center distances with backlash. The backlash for mating gears, when assembled, is shown in the table below.

Concentricity - The concentricity of the pitch line with bore (TIR - total indicator reading) is held to the tolerances specified in the table below. Other dimensions are held to standard commercial tolerances and finishes.

Bores - Our gears are bored, honed or ground to a smooth finish and held to tolerances as follows:

1/4" diameter bore to 1" diameter bore +-.0005"
1-1/16" diameter bore to 2" diameter bore +-.00075
Please call for bores larger than 2" -- 800-523-2576

Diametral Pitch

Circular Pitch

Metric Pitch (module)

Backlash

Concentricity

2 DP

1-1/2" CP

12 MOD

.010-.015"

.008

2.5 DP

1-1/4" CP

10 MOD

.010-.015"

.008

3 DP

1" CP

8 MOD

.009-.014"

.006

4 DP

3/4" CP

6 MOD

.007-.011"

.006

5 DP

5/8" CP

5 MOD

.006-.009"

.005

6 DP

1/2" CP

4 MOD

.005-.008"

.005

8 DP

3/8" CP

3 MOD

.004-.006"

.005

10 DP

5/16" CP

2.5 MOD

.003-.005"

.004

12 DP

1/4" CP

2 MOD

.003-.005"

.004

16 DP

3/16" CP

1.5 MOD

.002-.004"

.0025

20 DP

1.25 MOD

.002-.004"

.0025

24 DP

1/8" CP

1 MOD

.002-.004"

.0025

32 DP

1/10" CP

.75 MOD

.002-.003"

.002

48 DP

1/16" CP

.5 MOD

.002-.003"

.002

64 DP

1/20" CP

.4 MOD

.002-.003"

.002

*Parts conform to tolerances spelled out on customer's drawings when supplied.