About Durometer
Durometer is the international standard for measuring the hardness of rubber, plastic, and most nonmetallic materials.
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About Linear Bearings
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Press-Fit Drill Bushings
Also known as jig bushings, these drill bushings fit inside fixture plate holes to precisely guide drill bits, counterbores, reamers, and other cutting tools. They improve accuracy so your drilled holes and cuts are consistent from part to part. Known for their versatility, drill bushings are also used as spacers, shims, and machinery bushings.
Press into place with a manual or hydraulic press. Since these bushings are sized slightly larger than the hole for an extremely tight fit, they’ll stay put permanently. These are ANSI Type P bushings—also known as headless bushings—which means you don’t need to counterbore the hole to mount them flush.
Don't see the size you need? Additional sizes are available.
Tolerance | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Lg. | For Drill Bit Size | ID | OD | Lg. | Drill Bushing Type | Material | Hardness | 1-5 | 6-11 | 12-Up | |
0.188" ID | ||||||||||||
| 5/16" | 1/2" | 3/16" | 0.0001" to 0.0004" | 0.0013" to 0.0016" | -0.015" to 0.015" | P | Steel | Rockwell C61 | 00000000 | 000000 | 00000 | 00000 |
Press-Fit Reamer Bushings
With ID tolerances sized specifically for reamers, these bushings ensure steady and precise hole finishing. Press them into a fixture plate with a manual or hydraulic press for permanent installation. Also known as headless bushings, these ANSI-type P bushings don’t need counterboring to be mounted flush. They are made of hardened, ground steel that holds its shape and resists wear, so they last for many cycles without needing to be replaced.
Tolerance | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ID | OD | Lg. | For Reamer Size | ID | OD | Lg. | Drill Bushing Type | Material | Hardness | Each | |
| 0.188" | 5/16" | 3/8" | 0.188" | 0.0005" to 0.0008" | 0.0013" to 0.0016" | -0.01" to 0.01" | P | Steel | Rockwell C61 | 00000000 | 00000 |
High-Temperature Linear Ball Bearings
The choice for low-friction motion in high-temperature environments. Bearings are for use with round end-supported shafts and have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).
Stainless steel bearings are more corrosion resistant than steel bearings.
Bearings | External Retaining Rings | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Lg. | For Housing ID | Retaining Ring Groove End-to-End Lg. | With End Seals | Dynamic Load Capacity, lbs. | Dynamic Load Capacity at Max. Temperature | Max. Temp., ° F | For Shaft Material | Each | Each | ||
440C Stainless Steel Bearings with Stainless Steel Balls | ||||||||||||
| 3/16" | 9/16" | 0.3749" - 0.3755" | 0.417" | No | 5 | 3 lbs. @ 600° F | 600° | Stainless Steel | 00000000 | 0000000 | 0000000 | 00000 |
High-Load Linear Ball Bearings
Designed to handle heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings. They are for use with round end-supported shafts and have a self-aligning design to compensate for shaft misalignment. To install, slide bearings into a housing (not included).
Load Capacity, lbs. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Lg. | For Housing ID | OD | With End Seals | Dynamic | Static | Max. Temperature, °F | For Shaft Material | Each | |
Acetal Bearings with Steel Balls | ||||||||||
| 3/16" | 9/16" | 0.3750" - 0.3755" | 3/8" | No | 35 | Not Rated | 176° | Stainless Steel; Steel | 0000000 | 000000 |
Linear Sleeve Bearings
Bearings are for use with round end-supported shafts. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).
Bearings with 0.0005" shaft clearance are best for precision applications. Bearings with 0.001" or 0.0015" shaft clearance are less likely to bind on your shaft than bearings with 0.0005" shaft clearance.
Fixed Alignment—Bearings are for use where shaft misalignment is unlikely.
Frelon-lined bearings are wear and chemical resistant. Frelon-lined aluminum bearings have good corrosion resistance. Note: Not for use with aluminum, chrome-plated steel, or 300 series stainless steel shafts. Frelon-lined 316 stainless steel bearings have excellent corrosion resistance. Note: Not for use with chrome-plated steel.
Bearings | External Retaining Rings | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Shaft Clearance | Overall Lg. | For Housing ID | Retaining Ring Groove End-to-End Lg. | Dynamic Load Capacity | Static Load Capacity, lbs. | Temperature Range, ° F | For Shaft Material | Each | Each | ||
Frelon-Lined 316 Stainless Steel Bearings | ||||||||||||
| 3/16" | 0.0005" | 9/16" | 0.3760" - 0.3770" | 0.435" | 10 lbs. @ 100 fpm | 100 | -400° to 400° | Stainless Steel | 0000000 | 000000 | 0000000 | 00000 |
Frelon-Lined 6061 Aluminum Bearings | ||||||||||||
| 3/16" | 0.0005" | 9/16" | 0.3755" - 0.3764" | 0.435" | 20 lbs. @ 100 fpm | 220 | -400° to 400° | Steel | 00000000 | 00000 | 0000000 | 000 |
| 3/16" | 0.0015" | 9/16" | 0.3755" - 0.3764" | 0.435" | 20 lbs. @ 100 fpm | 220 | -400° to 400° | Steel | 00000000 | 00000 | 0000000 | 000 |
Tight-Tolerance Drive Rollers
The surface of these rollers is molded to a tolerance of either ±0.003 in. or ±0.08 mm to provide more consistent surface contact. Also known as contact wheels and feed rollers, they have tapped hubs that allow you to mount them onto a shaft or stud to transmit power. The urethane surface is nonmarring and wear resistant.