About Linear Bearings
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About Ball and Roller Bearings
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Selecting Compatible Lead Screws and Nuts
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About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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Ball Bearings
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
Bearings with retaining ring have a removable retaining ring that holds the bearing inside a housing.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
6209 | 45mm | 85mm | 19mm | Steel | 6,200 | 4,150 | 7,700 | Lubricated | -20° to 230° | ABEC-1 | __ | 00000000 | 000000 |
6306 | 30mm | 72mm | 19mm | Steel | 6,500 | 3,600 | 13,700 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
6209-2Z | 45mm | 85mm | 19mm | Steel | 6,950 | 4,500 | 8,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6306-2Z | 30mm | 72mm | 19mm | Steel | 6,500 | 3,600 | 9,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
Retaining
Ring
Retaining Ring, mm | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6306-2Z | 30mm | 72mm | 19mm | 78.6 | 1.7 | Steel | 6,650 | 3,550 | 11,000 | Lubricated | -20° to 230° | ABEC-1 | 0000000 | 000000 |
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
6209-2RS | 45mm | 85mm | 19mm | Steel | 6,950 | 4,500 | 4,600 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 000000 |
6306-2RS | 30mm | 72mm | 19mm | Steel | 6,500 | 3,600 | 6,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
Retaining
Ring
Retaining Ring, mm | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6306-2RS | 30mm | 72mm | 19mm | 78.6 | 1.7 | Steel | 6,650 | 3,550 | 6,300 | Lubricated | -40° to 210° | ABEC-1 | 0000000 | 000000 |
Permanently Lubricated Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Because it's solid, the lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
6209 | 45mm | 85mm | 19mm | Steel | 5,650 | 4,150 | 4,600 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6306 | 30mm | 72mm | 19mm | Steel | 4,600 | 3,150 | 5,700 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
Sealed | ||||||||||||
6209-2RS | 45mm | 85mm | 19mm | Steel | 5,650 | 4,150 | 4,600 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
6306-2RS | 30mm | 72mm | 19mm | Steel | 4,600 | 3,150 | 5,700 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
Precision Ball Bearings
For greater accuracy and higher speeds, these bearings are made to tighter tolerances than standard ball bearings.
Shielded bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
6209-2Z | 45 | 85 | 19 | Steel | 7,850 | 4,850 | 8,500 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
6306-2Z | 30 | 72 | 19 | Steel | 6,650 | 3,550 | 11,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 00000 |
Sealed | ||||||||||||
6209-2RS | 45 | 85 | 19 | Steel | 7,850 | 4,850 | 5,000 | Lubricated | -30° to 210° | ABEC-3 | 00000000 | 00000 |
6306-2RS | 30 | 72 | 19 | Steel | 6,650 | 3,550 | 6,300 | Lubricated | -30° to 210° | ABEC-3 | 00000000 | 00000 |
Self-Aligning Ball Bearings
With a spherical raceway and two rows of balls, these bearings compensate for shaft misalignment.
Sealed bearings block out dust and other contaminants better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Misalignment Capability | Temp. Range, °F | ABEC Rating | Each | |
Sealed | |||||||||||||
2303-2RS | 17 | 47 | 19 | Steel | 2,850 | 760 | 11,000 | Lubricated | 1.5° | -30° to 210° | ABEC-1 | 0000000 | 0000000 |
Electrically Insulated Ball Bearings
Good for use in electric motors and power generators, these bearings have ceramic balls that insulate against stray current to prevent damage to the bearing. The ceramic balls generate less heat than steel balls, so they require lubrication less frequently.
Shielded bearings block out dust and other contaminants.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
6209-2Z | 45 | 85 | 19 | Steel | 8,400 | 5,700 | 11,800 | Lubricated | -20° to 245° | ABEC-1 | 0000000 | 0000000 |
6306-2Z | 30 | 72 | 19 | Steel | 7,800 | 4,300 | 14,000 | Lubricated | -20° to 245° | ABEC-1 | 0000000 | 000000 |
One-Way Locking Ball Bearing Clutches
Internal locking elements (sprags) lock to transmit torque in one direction while turning freely in the other direction. Use them in applications where precision movement is required, such as pick-and-place and automated indexing conveyor systems. Shields keep out dust and contaminants.
For dirty or dusty environments, sealed bearings are the best choice, since they block out contaminants better than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Max. Torque, ft.-lbs. | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | |||||||||||||
FZ 6204 2RS | 20 | 47 | 19 | Steel | 1,540 | 940 | 6,000 | 64 | Lubricated | -40° to 170° | ABEC-1 | 0000000 | 0000000 |
Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6306-2Z | 30mm | 72mm | 19mm | 440C Stainless Steel | 5,100 | 2,650 | 11,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 0000000 |
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6209-2RS | 45mm | 85mm | 19mm | 440C Stainless Steel | 7,300 | 4,600 | 5,000 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 0000000 |
Permanently Lubricated Stainless Steel Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
6209 | 45 | 85 | 19 | 440C Stainless Steel | 5,650 | 4,150 | 4,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 0000000 |
Sealed | ||||||||||||
6209-2RS | 45 | 85 | 19 | 440C Stainless Steel | 5,650 | 4,150 | 4,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
Food Industry Permanently Lubricated Stainless Steel Ball Bearings
Good for applications with incidental food contact, these 440C stainless steel bearings have a food-grade, solid polymer lubricant between the balls and ring that eliminates the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Sealed | |||||||||||||
6306-2RS | 30 | 72 | 19 | 440C Stainless Steel | 5,100 | 2,650 | 5,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 0000000 |
Set Screw Collar Ball Bearings
Slip these bearings onto a shaft and secure with the included set screws, no special tools required. All have an extended inner ring for additional shaft support.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Flanged bearings have a flange that ensures proper positioning inside a tube or housing.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Radial Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | ABEC Rating | Each | |
Sealed (Lubricated) | ||||||||||||
Steel—Flanged | ||||||||||||
GYAE35RRB | 35mm | 72mm | 19mm | 46.8mm | 36.5mm | 6,400 | 3,400 | 5,000 | -65° to 250° | ABEC-1 | 0000000 | 000000 |
Clamp-On Collar Ball Bearings
Quickly secure these bearings onto shafts with the clamp-on collar for a concentric, mar-free hold. Tighten the single screw on the locking collar around its inner ring on your shaft to center and secure the shaft in the bearing bore. The collar’s firm grip reduces vibration and noise in your system. The steel rings on these bearings have a black-oxide finish for some corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | |||||||||||||||
Black-Oxide Steel Ring | |||||||||||||||
ER205 | 25mm | 52mm | 19mm | 35mm | 35mm | 58mm | 1.2mm | 2,800 | 1,650 | 6,350 | Lubricated | -20° to 220° | ABEC-1 | 0000000 | 000000 |
Angular-Contact Thrust Ball Bearings
Single-row bearings handle thrust loads on one side. For applications with thrust loads on both sides, mount them in pairs.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Single Row | ||||||||||||||
Open | ||||||||||||||
7209 | 45 | 85 | 19 | Steel | 8,000 | 5,800 | 9,000 | Required | 40° | -20° to 230° | ABEC-3 | __ | 0000000 | 0000000 |
7306 | 30 | 72 | 19 | Steel | 7,300 | 4,300 | 12,000 | Required | 40° | -20° to 230° | ABEC-3 | __ | 0000000 | 000000 |
Sealed | ||||||||||||||
7306-2RS | 30 | 72 | 19 | Steel | 7,650 | 4,950 | 6,000 | Lubricated | 40° | -20° to 230° | ABEC-1 | DIN 628-1 | 0000000 | 000000 |
High-Speed Angular-Contact Thrust Ball Bearings
An ABEC-7 rating means these bearings are made to some of the tightest tolerances, so they operate at the highest speeds.
Open bearings dissipate heat more efficiently than sealed bearings.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Each | |
Single Row | |||||||||||||
Open | |||||||||||||
7209 | 45 | 85 | 19 | Steel | 9,650 | 6,450 | 17,700 | Required | 15° | -40° to 245° | ABEC-7 | 0000000 | 0000000 |
Tapered-Roller Bearings
Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Bearing Trade Number | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
50mm | 80mm | 19mm | 33010 | 4,650 | 25,200 | 2,500 | 23,300 | 2,200 | Required | -60° to 200° | 0000000 | 0000000 |
70mm | 110mm | 19mm | 32014 | 6,500 | 36,600 | 4,850 | 46,500 | 1,500 | Required | -60° to 200° | 0000000 | 000000 |
Cylindrical Roller Bearings
With cylindrical rollers to distribute load over a large surface area, these bearings are often used to support heavy loads at high speeds in applications such as power generation and metal recycling. A cage prevents the rollers from touching each other, reducing friction for high-speed use. All of these bearings have an inner ring that's flanged on one side, so they only allow heat expansion in one direction. The bearings can be taken apart, so you can install them with precision and quickly dismantle them for maintenance or replacement.
For technical drawings and 3-D models, click on a part number.
Radial Load Capacity, lbs. | Thrust Load Capacity, lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Diameter, mm | For Housing ID, mm | Width, mm | Ring Material | Dynamic | Static | Dynamic | Static | Maximum Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microns | Temperature Range, °F | Specifications Met | Each | |
For Combined Radial and Thrust Loads | ||||||||||||||
Open | ||||||||||||||
45 | 85 | 19 | Steel | 16,150 | 14,150 | Not Rated | Not Rated | 10,200 | Required | 0.8 | -20° to 245° | DIN 5412-1 | 00000000 | 0000000 |
High-Load Linear Ball Bearings for Support Rail Shafts
Designed for heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings for support rails. Use them for applications that require maximum rigidity. All are self-aligning to compensate for shaft misalignment. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).
Bearings with end seals keep lubricants in and dirt out.
For technical drawings and 3-D models, click on a part number.
Bearings | External Retaining Rings | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | Overall Lg., mm | Wd., mm | For Housing ID, mm | With Retaining Ring Grooves | Retaining Ring Groove End-to-End Lg., mm | With End Seals | Dynamic Load Capacity, lbs. | Max. Temperature, ° F | For Shaft Material | Each | Each | ||
Acetal Plastic Bearings with Steel Balls | |||||||||||||
40 | 80 | 19 | 62.000 - 62.025 | Yes | 60.3 | Yes | 3,000 | 176° | Stainless Steel, Steel | 0000000 | 0000000 | 0000000 | 00000 |
Mounted Linear Sleeve Bearings for Support Rail Shafts
Virtually maintenance free, these bearings have slippery, chemical-resistant liners that don't require added lubrication. Mount them on a support rail shaft for applications requiring maximum rigidity.
Self Aligning—Bearings compensate for shaft misalignment.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Shaft Clearance | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic Load Capacity | Static Load Capacity, lbs. | Temperature Range, ° F | For Shaft Material | No. of | Dia. | Each | |
Self Aligning | ||||||||||||||
PTFE-Lined 6061 Aluminum Bearings with 6063 Aluminum Housing | ||||||||||||||
40mm | -0.038mm to -0.013mm | 90mm | 90mm | 72mm | 42mm | 19mm | 1,000 lbs. @ 100 fpm | 18,600 | -400° to 375° | Aluminum, Stainless Steel, Steel | 4 | 10mm | 00000000 | 0000000 |
Metric Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, size, pitch, and number of thread starts. Class 7e and 7H components are compatible.
360 brass components have excellent machinability and good corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
Thread Size | Thread Pitch, mm | Ht., mm | Wd., mm | No. of Thread Starts | Speed Ratio | Travel Distance per Turn, mm | Thread Fit | Hardness | Each | |
360 Brass | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
M10 | 2 | 20 | 19 | 1 | 1:1 | 2 | 7H | Not Rated | 000000000 | 000000 |
Bearing Retaining Nuts
Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts. Some meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
Carbon steel retaining nuts are strong and resist wear.
For technical drawings and 3-D models, click on a part number.