About Gears
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About Roller Chain and Sprockets
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Flat Sprockets for Metric Roller Chain
With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.
Taper-Lock Bushings
Mount these hubless bushings flush into your sprocket or pulley for a slim profile with no protruding screws. They are for use with taper-lock sprockets of the same bushing style. As you tighten the included set screws, the bushing grips the shaft and pulls it into your sprocket or pulley.
Keyway | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Wd. | Wd. | Dp. | Taper | Fastener Tightening Torque, in.-lbs. | Material | Includes | Each | |
1008 Style Bushing | |||||||||
| 18mm | 22mm | 6mm | 2.8mm | 8° | 55 | Steel | Set Screws | 000000000 | 000000 |
1108 Style Bushing | |||||||||
| 18mm | 22mm | 6mm | 2.8mm | 8° | 55 | Steel | Set Screws | 000000000 | 00000 |
1210 Style Bushing | |||||||||
| 18mm | 25mm | 6mm | 2.8mm | 8° | 175 | Steel | Set Screws | 000000000 | 00000 |
1610 Style Bushing | |||||||||
| 18mm | 25mm | 6mm | 2.8mm | 8° | 175 | Steel | Set Screws | 000000000 | 00000 |
Split-Tapered Bushings
The tapered barrel on these bushings is split on both sides, allowing them to contract more tightly around the shaft than quick-disconnect and taper-lock bushings. They're for use with split-tapered sprockets and pulleys of the same bushing style. As you tighten the included screws, the bushing grips the shaft and pulls it into the sprocket or pulley.
Keyway | |||||||
|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Wd. | Wd. | Dp. | Taper | Fastener Tightening Torque, in.-lbs. | Each | |
Steel | |||||||
H Style Bushing | |||||||
| 18mm | 1 1/4" | 6mm | 3mm | 3° | 95 | 00000000 | 000000 |
Quick-Grip Screw-Clamp Bushings
Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Each | |
Steel | |||||
|---|---|---|---|---|---|
| 18mm | 32mm | 29mm | 2,000 | 0000000 | 0000000 |
Flanged Screw-Clamp Bushings
A mounting flange prevents movement during tightening. These bushings are good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Fastener Tightening Torque, in.-lbs. | Material | Includes | Each | |
| 18mm | 32mm | 24mm | 990 | 42 | Steel | Clamping Screws | 0000000 | 000000 |
Metal Worms and Worm Gears
Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle, pitch/module, number of thread starts, and thread direction. These worms are compatible with plastic worm gears.
Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
4140 alloy steel worms are already mounted on a shaft, so they’re ready to use with no machining required. The threads are ground into the shaft for higher precision than rolled threads, and hardened for additional durability and precision.
Shaft | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Pressure Angle | Worm Lg., mm | Gear Pitch Dia., mm | OD, mm | Dia., mm | Lg., mm | Number of Thread Starts | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
4140 Alloy Steel | ||||||||||||
| 1 | 20° | 30 | 16 | 18 | 18 | 140 | 1 | Right Hand | Hardened | Ground | 000000000 | 0000000 |