NSK7220CTRDULP4YSuper-Precision Angular Contact Ball Bearings – 100 mm ID, 180 mm OD, 34 mm Width, 15° Contact Angle, Open, Light Preload, P4Y, 2 Pcs

Product Description

What this part is:

NSK 7220CTRDULP4Y super-precision single-row angular contact ball bearing, a universally matchable duplex pair at light preload, supplied as 2 pieces. 72 series, open on both faces, straight bore. Unit Quantity: 2 Pcs.

Decoding the designation:

7220 — series 72, bore code 20, 100 mm bore.

C — 15° contact angle.

TR — phenolic cage guided on the outer ring, rated to 120 °C.

DU — universally matchable duplex pair.

L — light preload.

P4Y — ISO class 4 with additional control of ring diameters, tighter than plain P4.

Specifications:

Bore Diameter: 100 mm. Outside Diameter: 180 mm. Overall Width: 34 mm per bearing. Total Width: 68 mm for the pair. Contact Angle: 15°. Dynamic Load Rating: 188,000 N per bearing. Static Load Rating: 127,000 N per bearing. Permissible axial load: 88.5 kN. Limiting Speed: 8,300 rpm grease; 12,500 rpm oil or oil-air. Preload: Light. Precision Class: P4Y. Cage Material: Phenolic. Cage Type: Outer-ring-guided. Maximum temperature: 120 °C. Item Weight: 3.18 kg per bearing. Closure Type: Open. Bore Type: Straight. Number Of Rows: 1 per bearing.

Dimensions and mounting:

Bore: 100 mm. Outside diameter: 180 mm. Width: 34 mm per bearing, 68 mm for the pair. Arrangement: universally matchable; the pair mounts back-to-back, face-to-face or in tandem at the ground light preload. Series: 72.

Compatibility and replacement:

Cross-references: SKF 7220 CDGA/P4A and FAG B7220-C-T-P4S-DUL, both 100 x 180 x 34 mm at 15° with light preload. NSK 7220A5TRDULP4Y is the 25° version in the same envelope. Searchable forms: 7220CTRDULP4Y, 7220 CTR/DUL P4Y, 7220-CTR-DUL-P4Y, 7220C.

Frequently asked questions:

What size is the NSK 7220CTRDULP4Y?

Bore 100 mm, outside diameter 180 mm, width 34 mm per bearing; the pair measures 68 mm total width.

What are the load ratings and limiting speeds?

Dynamic load rating 188,000 N and static load rating 127,000 N per bearing; limiting speed 8,300 rpm on grease and 12,500 rpm on oil or oil-air.

What do DU, L and P4Y mean?

DU is a universally matchable duplex pair, L is light preload, and P4Y is ISO class 4 with additional control of ring diameters.