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Round Bore

Shaft Collars

One-Piece Clamp-Type Collars

For use on standard round shafts, hard or soft, as well as on thin wall tubeor over a split hub. These collars are sized .001”-.002” over nominal toallow a smooth slip fit to the intended location, where the screw is tightened and the collar locked in place. Precision machined, non-marring, easy to adjust, with high clamping power, they are stocked in three varieties.

HIGH STRENGTH, PAGE 5 • LOW PROFILE, PAGE 6 • HEAVY DUTY, PAGE 11

Two-Piece Clamp-Type Collars

These collars come completely apart and can easily be assembled any-where on a shaft. They are for use on standard round shafts, hard orsoft, as well as on thin wall tube or over a split hub. Precision machined, non-marring, easy to adjust, with high clamping power, they are stocked in three varieties.

HIGH STRENGTH, PAGE 7 • LOW PROFILE, PAGE 8• HEAVY DUTY, PAGE 11

Balanced Two-Piece Clamp-Type Collars

These collars have opposing screws to minimize vibration and allow assem-bly where access is limited. They come completely apart and can easily beassembled anywhere on a shaft. For use on standard round shafts, hard or soft, as well as on thin wall tube or over a split hub. Precision machined, non-marring, easy to adjust, with high clamping power.

HIGH STRENGTH, PAGE 9

Hinge Collars

Featuring a triple-link hinge and captive screw in one unit, these collarscombine the flexibility of the two-piece collar with the simplicity of theone-piece. Available only from Stafford.

HIGH STRENGTH, PAGE 10 • METRIC, PAGE 10

Set-Screw Type Collars

The oldest type of shaft collar, these units function by gouging the setscrew into the surface of a soft shaft. They are a low-cost answer whenfrequent adjustment is not a consideration.

PAGE 12

HOW TO DETERMINE AXIALLOAD CAPACITY (CLAMPING POWER) OF A CLAMP-TYPE SHAFT COLLAR.

ALLOY SOCKETMAXIMUM SCREW AXIAL LOADCAP SCREWTORQUE
(INCH-POUNDS)(POUNDS) 4-4017200 Axial load capacityis primarily a function of a collar’s clamp screw. It can be derived for most steel clamp collars from the accompanying chart*. These results were obtained using high-strength steel collars on standard steel shafting with no special treatment on shaft surfaces. 6-3230300 8-3260400 10-3290700 1/4-281901500 5/16-244353000 3/8-24750 5500
*Rule of thumb only, we do recommend further consultation in critical applications 1/2-2015998500 4