NACHI 6201-2NSENRC3 Sealed Deep Groove Ball Bearing 12x32x10 mm, C3, snap ring

This NACHI range covers 20 single row deep groove ball bearings, contact sealed with a snap ring groove and snap ring fitted, all with C3 radial internal clearance, from 12 to 60 mm bore (outer diameters 32 to 110 mm, widths 9 to 25 mm). Select the size from the drop-down: each size has its own bearing number, load ratings and limiting speed in the Model Details.

Deep groove bearings are the most widely used ball bearing type. They carry radial, axial and combined loads, run at high speed with high running accuracy, and need no adjustment.

Where this product is used

• Electric motors and generators
• Pumps, fans and blowers
• Gearboxes and industrial transmissions
• Conveyor rollers, idlers and pulleys
• Power tools, appliances and general industrial machinery

Features

• Two contact rubber seals (2NSE) retain the factory grease fill and give excellent dust and water proofing, including in severe dust environments
• Seal contact adds friction torque, so limiting speed is lower than the equivalent open or shielded bearing
• Snap ring groove with snap ring fitted in the outer ring (NR), which simplifies housing design and mounting
• C3 radial internal clearance, larger than Normal: 11 to 25 µm on a 12 mm bore up to 23 to 43 µm on a 60 mm bore
• Load ratings, limiting speeds and mass for every size are taken from the manufacturer’s catalogue; boundary dimensions follow the ISO/JIS standard plan

Key specifications

Available sizes

Selecting the right option

Contact-sealed bearings (NSE, NSL, NS) give the best dust and water proofing of the three closure types and can run in severe dust. The trade-off is higher friction torque and a lower limiting speed. The filled grease can leak at high speed or high temperature, or if the outer ring rotates. For standard filled grease the recommended temperature range is -25 to 100 °C.

Choose C3 where the bearing will run with an interference fit or a temperature difference between the rings, which both take up clearance; keep Normal clearance for light fits and low temperature rise. The Model Details give the exact micrometre range for each size.

Fitting and use

Check the load and speed against the catalogue figures in the table before ordering, and apply a suitable safety factor. These bearings must always carry a minimum radial load so the balls roll rather than slide.

Press the ring that is being fitted, not the other ring or the balls: force goes through the side face of the inner ring on a shaft and the outer ring in a housing.

Sealed bearings are built for inner ring rotation, so they are not suited to high speed outer ring rotation. Do not wash or heat sealed bearings before mounting.

Related products

The same NACHI deep groove range is also available with other closures: NACHI open C3 deep groove ball bearings (28 sizes), NACHI double shielded C3 deep groove ball bearings (1 size) and NACHI double contact sealed C3 deep groove ball bearings (3 sizes).