RHP7016ETDUMP4Super Precision Angular Contact Ball Bearing – Matched Pair, Straight Bore, 80 mm ID, 125 mm OD, 22 mm Width, Open, 25° Contact Angle, Universal Medium Preload

Product Description

What this part is

RHP 7016ETDUMP4 is a matched pair of super-precision angular contact ball bearings. Each bearing measures 80 mm bore, 125 mm outside diameter and 22 mm width, giving 44 mm total width across the pair. Rings and balls are chrome bearing steel, the cage is machined laminated phenolic, and both faces are open.

Decoding the designation

7016 places the bearing in the ISO 70 dimension series with an 80 mm bore. In the RHP scheme E denotes a 25° contact angle. T is a machined laminated phenolic cage guided on the outer ring. DUM is a universally matchable duplex set at medium preload. P4 is ABEC 7 precision. The carton also carries the Fafnir designation 3MM9116WI CR DUM, and the 3MM prefix in that scheme independently confirms the 25° angle.

What these specs mean in practice

A 25° contact angle carries more thrust and less speed than a 15° bearing of the same envelope, which suits spindles and screw drives where axial load dominates. Medium preload raises stiffness and running accuracy over a light-preload set and generates more heat in return. The machined phenolic cage is light, tolerant of marginal lubrication and rated for continuous service to 120 °C.

Load ratings and speed

Basic dynamic load rating 70.0 kN and basic static load rating 52.5 kN, both per bearing. Limiting speed 9,800 rpm on grease and 14,700 rpm on oil. Approximate mass 0.88 kg per bearing.

Quantity and configuration

Two bearings. Universally matchable rings may be stacked back-to-back, face-to-face or in tandem, with preload established by the ground offset rather than by shims. A preloaded set has no radial internal clearance, so clearance class does not apply.

Fitting notes

Both rings are a ground fit and are pressed on their own faces, never through the balls. Shaft and housing seats to the super-precision fit tables give the ground preload its intended value. Marking lines on the outer ring faces are aligned during stacking to hold the intended arrangement.

Interchange guidance

NSK 7016A5TRDUMP4 and SKF 7016 ACD/P4ADGB share the envelope, the 25° angle and the medium preload, and are direct equivalents. Fafnir 3MM9116WI CR DUM is the Timken equivalent. FAG B7016-E-T-P4S-DUL shares the envelope and angle but is ground to light preload, making it a related size rather than an interchange.