SNR7010HVDUJ84Super-Precision Angular Contact Ball Bearing, Universally Matchable Pair, 50 x 80 x 16 mm, 25 Degree Contact Angle, Medium Preload, Phenolic Cage

Product Description

What this part is

SNR 7010 H V DU J84 is a super-precision single-row angular contact ball bearing supplied as a universally matchable pair. Bore 50 mm, outside diameter 80 mm, width 16 mm per bearing, 32 mm across the pair. Contact angle 25°, machined phenolic cage, open on both faces.

Decoding the designation

7010 is the ISO 70 dimension series at a 50 mm bore. H sets the 25° contact angle in the SNR scheme, where C is the 15° alternative. V is the machined phenolic cage. DU marks the bearing as one of a universally matchable duplex pair, and J84 is SNR’s medium preload grade, one step above the light J74.

What these specs mean in practice

A 25° contact angle carries substantially more thrust than the 15° C variant of the same envelope, at the cost of top speed. Medium J84 preload raises axial and radial stiffness and holds the ball path steady under reversing thrust, which suits milling spindles and screw drives where positioning accuracy under load matters more than maximum r/min. Basic dynamic load rating is 24.3 kN and static rating 18.3 kN per bearing, with a limiting speed of 21 000 r/min and running accuracy to ISO class 4, equivalent to ABEC 7. The machined phenolic cage runs light and quiet and tolerates oil-air and oil-mist lubrication.

Quantity and configuration

Two bearings, one matched pair, 32 mm total width. Flush ground faces allow back-to-back, face-to-face or tandem mounting, with J84 preload established once both rings are clamped.

Fitting notes

Preload comes from the ground ring faces, so both inner rings and both outer rings clamp solid against their seats and against each other. Mounting marks on the outer ring diameters align to keep the ground offsets in register. Preload takes the place of a radial internal clearance class on a set like this.

Interchange guidance

Direct 25° medium-preload duplex equivalents are SKF 7010 ACD/P4ADGB, FAG B7010-E-T-P4S-DUM, Fafnir 3MM9110WI CR DUM and NSK 7010A5TRDUMP4. The 7010 C V DU J84 shares the envelope at a 15° contact angle, and the NSK 7010 A runs a 30° angle; both are related sizes rather than substitutions.