RHPSuper-Precision Angular Contact Ball Bearing Duplex Pair – 15 mm Bore x 32 mm OD x 9 mm Wide, 25° Contact Angle, Phenolic Cage, ABEC 7, Medium Preload

Product Description

What this part is

RHP 7002ETDUMP4V super-precision angular contact ball bearings, ISO 7002 size, supplied as a matched duplex pair. Bore: 15 mm. Outside Diameter: 32 mm. Width: 9 mm each. Total Width: 18 mm stacked. Bearing Type: Single-row angular contact ball bearing, universally ground duplex pair. Number of Rows: 1 per bearing. Rolling Elements: Ball. Contact Angle: 25°. Closure Type: Open. Cage Material: Phenolic. Cage Type: Machined. Precision Class: P4, ABEC 7. Preload: Medium, 100 N. Dynamic Load Rating: 5.95 kN per bearing. Static Load Rating: 3.25 kN per bearing. Limiting Speed: 36,400 rpm on grease, 58,800 rpm on oil or air. Item Weight: 0.031 kg per bearing.

Decoding the designation

7002 — the ISO 7002 size, 15 x 32 x 9 mm, in the 70 light dimension series.

E — 25° contact angle.

T — machined phenolic cage.

DU — duplex universal: both bearings are face-ground so the pair mounts back-to-back, face-to-face or in tandem and reaches its preload without shims.

M — medium preload class, 100 N across the pair.

P4 — ISO tolerance class 4, ABEC 7.

What these specs mean in practice

Contact Angle: 25°. Compared with the 15° version of the same size it puts more of the ball load line into the axial direction, raising thrust capacity and axial stiffness, and it lowers the speed rating from 71,400 to 58,800 rpm on oil. Preload: Medium, 100 N. Medium preload gives higher axial and radial stiffness than light, at the cost of more heat generation. The catalogue ladder for a 25° pair on this size runs 19 N extra light, 39 N light, 100 N medium and 200 N heavy. Cage Material: Phenolic. Fabric-reinforced phenolic is light, holds oil in its own structure and runs quiet at the speeds this size reaches. Precision Class: P4 (ABEC 7). Bore, outside diameter, radial runout and face runout are held to super-precision limits. Dynamic Load Rating: 5.95 kN. Static Load Rating: 3.25 kN. Both figures are per bearing.

Mounting data

Effective Load Centre (a): 10 mm at 25°. Shaft Abutment Diameter (d1 min): 17.5 mm. Housing Abutment Diameter (D1 max): 29.5 mm. Outer Ring Face Abutment (D2 max): 30.8 mm. Bearing Chamfer (r min): 0.3 mm. Inner Chamfer (r1 min): 0.15 mm. Internal Free Volume: 1.4 cm³ per bearing.

Quantity and configuration

Unit Quantity: 2 Pcs. A matched duplex pair, ground together and supplied as one set.

Interchange guidance

Related designations: RHP B7002X3TADUMEP7 (X3 is the same 25° angle and EP7 the same ABEC 7 class), NSK 7002A5TRDUMP4 (NSK codes 25° as A5) and Fafnir 3MM9102WI-DUM (3MM also denotes 25°). The 15 x 32 x 9 mm envelope is ISO standard. A 7002C is 15° on the same seats, favouring speed over thrust, which makes it a related size rather than an interchange. Searchable variants of the part number: 7002ETDUMP4V, 7002-E-T-DUM-P4V, 7002 E T DUM P4V, 7002ETDUMP4, 7002ETDUM, 7002E.