NHBBMER-205DUMAngular Contact Ball Bearing – 25 mm ID, 52 mm OD, 15 mm Width, 15° Contact Angle, ABEC 7, Medium Preload

Product Description

What this part is

NHBB MER-205DUM-1/2PR is one super-precision angular contact ball bearing from a universal duplex set, in the 7205 envelope, built by NHBB’s HiTech Division. Bore Diameter: 25 mm. Outside Diameter: 52 mm. Overall Width: 15 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4.

Decoding the designation

MER — NHBB angular contact type, outer ring relieved, non-separable.

205 — dimension series 02, 25 mm bore.

DUM — universal duplex grinding, medium preload. The carton cross 7205-C-TPA-P4-SUM reads the same for a single bearing: single universal, medium preload.

-1/2PR — one half of a duplex pair: a single bearing.

7205-C-TPA-P4 — ISO 7205 envelope, 15° contact angle, phenolic cage, P4 tolerance.

What these specs mean in practice

Dynamic Load Rating: 3,550 lbf. Static Load Rating: 2,150 lbf. Rolling Elements: 11 balls, 5/16 in diameter. Cage Material: Phenolic. Closure Type: Open. Universal grinding lets this bearing pair with another universal bearing of the same designation and preload.

Mounting data

Maximum shaft or housing fillet radius: 0.039 in. Inner land diameter: 1.328 in. Outer land diameter: 1.703 in. Bore Type: Straight. Snap ring: No.

Quantity and configuration

Unit Quantity: 1 Pc. Preload: Medium. Mounting Arrangement: Universal, for back-to-back, face-to-face or tandem mounting.

Interchange guidance

Same envelope, angle, class and preload, single universal bearing: SKF 7205 CDGB/P4A, FAG B7205-C-T-P4S-UM, NSK 7205CTYNSUMP4, Fafnir 2MM205WI SUM.