L S Starrett BEARING COMPANY

Keystock Bearings

Keystock are removable bars that are used to transmit torque from components including couplings, sheaves, sprockets and gears to a shaft. They are called “keys” because they lock a component to the shaft by means of a corresponding keyway in a shaft. Keystock is available in both inch and metric sizes. Common keystock materials include steel, stainless steel and plated with zinc and are supplied in standard lengths of 12” long. Keystock can be rounded at both ends, squared at both ends, or rounded at one end and squared at the other.

There are many different types of keystock available including machine keys, Woodruff keys, hi-pro keys, gib head keys, and hex keys. Machined keystock is available in standard sizes and ready to use without additional cutting or filing. Woodruff keys are semi-circular components (half moon) installed deep in a shaft and firmly embedded. Hi-pro keys are similar to Woodruff keys, but lock into place. They provide superior strength and vibration resistance. Gib head keys are notched and tapered to tightly couple gears or pulleys with a shaft. Hex keys are L-shaped bars with a hexagonal head. They are used to turn screws with hexagonal sockets. The following chart details standardized keyways and setscrews utilized for inch sized shafts:

TIMKEN 52618 bearing
6.230 kN
0.6 mm
TIMKEN 632 bearing
40 mm
2 mm
TIMKEN 716649 bearing
193.675 mm
3100 r/min
TIMKEN 217849 bearing
3.00 mm
560000 N
TIMKEN 503349 bearing
3.00 mm
140.00 mm
TIMKEN 930036 bearing
166000 N
Shield & Seal & Snap
Browning 1304203 Keystock Bearings
6
VV (Non-Contact Rubb
Browning 1303791 Keystock Bearings
Non-Expansion Bearin
1.6250 in
Precision Brand 15655 Keystock Bearings
DIN 630
35 mm
Precision Brand 54675 Keystock Bearings
Cam Followers Stud Type
0.0
Precision Brand 54650 Keystock Bearings
Maximum of +800
Leaded-Tin Bronze
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