Keystock Bearings

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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:

Bearing Number Bore Dia Outer DIa Width Size
TIMKEN 52618 bearing 6.230 kN 0.6 mm 35 mm 46.4 kN
3.5 Inch | 88.9 Millimeter x 0 Inch | 0 Millimeter x 1.43 Inch | 36.322 Millimeter TIMKEN 593 bearing 2CE 5 mm 5600 r/min 15.3 kN
TIMKEN 632 bearing 40 mm 2 mm 3.9 kN 118.1 mm
TIMKEN 716649 bearing 193.675 mm 3100 r/min 15.875 mm 31.75 mm
TIMKEN 217849 bearing 3.00 mm 560000 N 130.00 mm 1500 rpm
TIMKEN 503349 bearing 3.00 mm 140.00 mm 1700 rpm 850000 N
TIMKEN 930036 bearing 166000 N Shield & Seal & Snap 3000 rpm 2000 rpm
Browning 1304203 Keystock Bearings 6 VV (Non-Contact Rubb 41 Flange Type
Browning 1303791 Keystock Bearings Non-Expansion Bearin 1.6250 in 136.7 mm 7.95 mm
Precision Brand 15655 Keystock Bearings DIN 630 35 mm Not Rated 13
Precision Brand 54675 Keystock Bearings Cam Followers Stud Type 0.0 N/A 0.018
Precision Brand 54650 Keystock Bearings Maximum of +800 Leaded-Tin Bronze 1 in 750 fp/min