RHP7914CTDULP4Super Precision Angular Contact Ball Bearing – Matched Pair, Straight Bore, 70 mm ID, 100 mm OD, 16 mm Width, Open, 15° Contact Angle, Universal Light Preload

Product Description

What this part is

RHP 7914CTDULP4 is a matched pair of super-precision angular contact ball bearings. Each bearing measures 70 mm bore, 100 mm outside diameter and 16 mm width, giving 32 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

The 70 x 100 x 16 mm envelope is the ISO 19 dimension series, catalogued as 71914 in current numbering, and 7914 is the older RHP form of the same bearing. In the RHP scheme C denotes a 15° contact angle, T a machined laminated phenolic cage guided on the outer ring, DUL a universally matchable duplex ground to light preload, and P4 ABEC 7 precision. The carton also carries RHP B-series B7914X2TADULEP7, where X2 confirms the 15° angle and EP7 confirms P4, and Fafnir 2MM9314WI CR DUL, where 2MM confirms 15°, the 9300 series prefix confirms the ISO 19 envelope, and CR confirms the phenolic outer-land-riding cage.

What these specs mean in practice

The ISO 19 series is a thin-section envelope: a 70 mm bore inside a 100 mm outside diameter, which buys shaft diameter and stiffness in a compact housing. A 15° contact angle favours speed and radial stiffness over thrust capacity, and light preload keeps heat generation low while removing all internal play. The machined phenolic cage is light, quiet and rated for continuous service to 120 °C.

Load ratings and speed

Basic dynamic load rating 35.5 kN and basic static load rating 27.8 kN, both per bearing. Limiting speed 13,600 rpm on grease and 20,600 rpm on oil. Approximate mass 0.338 kg per bearing.

Quantity and configuration

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

Fitting notes

Rings are pressed on their own faces, never through the ball complement. Shaft and housing seats ground to the super-precision fit tables give the preload its intended value. Face marking lines are aligned when stacking so the intended arrangement is held.

Interchange guidance

SKF 71914 CD/P4ADGA, FAG B71914-C-T-P4S-DUL and NSK 7914CTRDULP4 share the ISO 19 envelope, the 15° angle and the light preload, and are direct equivalents. Fafnir 2MM9314WI CR DUL is the Timken equivalent. The 7014 designation shares the 70 mm bore in the heavier ISO 70 series at 110 mm outside diameter, making it a related size rather than an interchange.