AS Inch/Metric Series Special Tolerance Information In cases where a slightly larger tolerance is required, the chart below can be used. To use this chart it is important to understand that the goal is to have the POWER-LOCK ® centered in the middle of the machined opening (i.e.: a = a). Under these conditions the POWER-LOCK will transmit the published torque figures.
EXAMPLE:
POWER-LOCK PL2 inside diameter
= 2.0000 inch = 3.3460 inch
outside diameter
Shaft diameter 1.9976 inch (0.0024 inch undersize) Counter-bore diameter 3.3484 inch (0.0024 inch oversize)
d = nominal I.D. D = nominal O.D. a = deviation increment from nominal size Note: Maximum tolerances applicable only when the absolute value of a of the shaft side is equal to that of the bore side.
Max. Clearance (inch)
Model Number
PL019X047 ~ PL030X055 PL032X060 ~ PL050X080 PL055X085 ~ PL080X120 PL085X125 ~ PL120X165 PL130X180 ~ PL180X235 PL190X250 ~ PL240X305 PL260X325 ~ PL300X375 Model Number
Shaft –0.002 ” +0 –0.0025 ” +0 –0.0029 ” +0 –0.0034 ” +0 –0.004 ” +0 –0.0045 ” +0 –0.0051 ” +0
Bore
PL
3/4
+0.002 ” –0 +0.0025 ” –0 +0.0029 ” –0 +0.0034 ” –0 +0.004 ” –0 +0.0045 ” –0 +0.0051 ” –0
~
PL1 PL1
1/8
3/16
~
PL1 PL2
15/16
~
PL3 PL3
3/8
~
PL4 PL4
1/2
15/16
~
PL7 PL7
1/2
~
PL10 PL10
1/2
~ PL11 13/16
D-28
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