NSK7218CTYDUMP4Angular Contact Ball Bearing — Super Precision, 90 mm ID, 160 mm OD, 30 mm Width, 15° Contact Angle, Ball-Guided Cage, Medium Preload, P4

Product Description

What this part is:

NSK 7218CTYDUMP4 is a super precision single-row angular contact ball bearing in the 7200 series, 90 mm bore by 160 mm outside diameter by 30 mm width, with a 15° contact angle. Supplied as a universally ground duplex pair at medium preload. Unit Quantity: 2 Pcs. GTIN: 029176090493.

Decoding the designation:

7218 — 72 series, 90 mm bore.

C — 15° contact angle.

TY — ball-guided cage.

DUM — universally ground duplex pair, medium preload.

P4 — ABEC 7 precision.

Specifications:

Bore Diameter: 90 mm. Outside Diameter: 160 mm. Width: 30 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Number Of Rows: 1 per bearing. Closure Type: Open. Cage Type: Ball-guided, machined. Preload: Medium, 1,865 N. Axial Rigidity: 187 N/µm. Basic Dynamic Load Rating Cr: 155,000 N (34,850 lbf) per bearing. Basic Static Load Rating C0r: 105,000 N (23,600 lbf) per bearing. Permissible Axial Load Pa: 72.0 kN. Limiting Speed: 9,000 rpm grease; 11,000 rpm oil-air. Item Weight: 2.20 kg (4.85 lb) per bearing.

Dimensions and mounting:

Effective load centre a: 31.7 mm. Shaft abutment diameter da: 100 mm min. Housing abutment diameters Da: 150 mm max; Db: 154 mm max. Shaft fillet radius ra: 2 mm max. Housing fillet radius rb: 1 mm max. Chamfer r: 2 mm min; r1: 1 mm min. Recommended grease: 12 g per bearing. Mounting Arrangement: universal duplex (DU), pairable DB, DF or DT.

Compatibility and replacement:

Cross-references at 15° and medium preload: SKF 7218 CD/P4ADGB, Fafnir 2MM218WI-DUM, RHP 7218CTRDUMP4 (phenolic cage). NSK 7218CTYDULP4 is the same bearing at light preload. NSK 7218A5 has the same envelope at a 25° contact angle. MPN variants: 7218CTYDUMP4, 7218-CTY-DUM-P4, 7218 CTY DUM P4, 7218C, 7218CTYDUMPA7, 7218CTYNDUMP4.

Frequently asked questions:

What are the dimensions of the NSK 7218CTYDUMP4?

Bore 90 mm, outside diameter 160 mm, width 30 mm per bearing.

What do C, TY and DUM mean in 7218CTYDUMP4?

C is a 15° contact angle, TY is a ball-guided cage, and DUM is a universally ground duplex pair at medium preload.

What are the load ratings and speeds of the 7218CTYDUMP4?

Dynamic load rating 155,000 N and static load rating 105,000 N per bearing; limiting speed 9,000 rpm on grease and 11,000 rpm on oil-air.