SNRSuper Precision Angular Contact Ball Bearing Pair – 35 mm ID, 62 mm OD, 14 mm Width, Open, 15°, Light Preload

Product Description

What this part is

A factory-matched pair of SNR 7007 C G1 DU J74 super-precision angular contact ball bearings. Single row each, 35 mm bore, 62 mm outside diameter, 14 mm width, open on both faces, with a machined phenolic cage riding on the outer ring land.

Decoding the designation

7007 is the ISO 70 dimension series with bore code 07, giving a 35 mm bore. C is a 15° contact angle. DU marks a duplex set ground together at the factory. J74 is the light preload class in the NTN-SNR super-precision preload scheme, one step below the J84 medium class. That preload family is separate from the SNR J20 to J50 radial clearance codes used on standard bearings.

What these specs mean in practice

Basic dynamic radial rating is 17.6 kN and static radial rating 10.4 kN per bearing. The 15° contact angle favours speed and radial stiffness over thrust capacity. Light preload gives defined ball contact with the least added friction and heat of the preload classes, which is what supports the 28,000 rpm limiting speed. The phenolic cage is light, low-friction and self-lubricating.

Quantity and configuration

Two pieces, one matched duplex set, 28 mm total width. Mounted back-to-back or face-to-face the set takes thrust in both directions and realises the J74 light preload; in tandem it takes thrust in one direction at doubled capacity.

Fitting notes

The marked ring faces go together in the factory-ground orientation, clamped square against a rigid shoulder so the preload lands as designed. Clamping load passes through the rings. Upper operating temperature for the phenolic cage is 120 °C.

Interchange guidance

Other makers’ 15° light-preload numbers in 35 x 62 x 14 mm: NSK 7007CTRDULP4, FAG B7007-C-T-P4S-DUL, RHP 7007CTDULP4 and Fafnir 2MM9107WI-CR-DUL, all with phenolic cages, and SKF 7007 CD/P4ADGB (check the cage). The same designation at J84 is the medium-preload version, and a 7007 A5 or 7007 E is the same 35 x 62 x 14 mm size at 25°; both are related parts, not substitutes.