RHP7020CTDULP0Angular Contact Ball Bearing – 100 mm Bore, 150 mm OD, 24 mm Wide, 15° Contact Angle, Light Preload, Phenolic Cage

Product Description

What this part is

RHP 7020CTDULP0 angular contact ball bearing, one bearing from a universally ground duplex pair. Bore Diameter: 100 mm. Outside Diameter: 150 mm. Overall Width: 24 mm. Contact Angle: 15°. Precision Class: ABEC 1 / P0. Preload: Light. Cage Material: Phenolic. Cage Type: Machined. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1. Item Weight: 1.26 kg (2.79 lb). Series: 10. Unit Quantity: 1 Pc.

Decoding the designation

70 — ISO dimension series 10 single-row angular contact ball bearing, the light spindle section.

20 — bore code. Multiplied by five it gives the 100 mm bore.

C — 15° contact angle. RHP’s mandatory contact-angle position, and the high-speed choice of its two values.

T — laminated fabric-base phenolic cage, machined from solid.

DU — universally ground for duplex mounting. Faces are adjusted at manufacture so back-to-back, face-to-face and tandem all reach the same preload without a custom spacer.

L — light preload, the level chosen for most spindle positions where load and speed are not extreme.

P0 — normal precision class, RHP EP1.

-1/2PR — supplied as one bearing, half of the pair designation.

What these specs mean in practice

Dynamic Load Rating: 75,500 N. Static Load Rating: 77,000 N. On the 70-series section from bore code 20 upward the static figure runs above the dynamic one; that is how RHP publishes it and it is a property of the light-section geometry.

Contact Angle: 15°. The load path runs close to radial, which favours speed and radial stiffness. A 25° execution of the same size carries more thrust and turns slower.

Preload: Light. Light preload keeps running temperature and friction down while still removing the play that lets a spindle chatter. Medium and heavy levels trade speed for stiffness.

Cage Material: Phenolic. Machined laminated fabric-base phenolic, quiet and low-friction, and the standard cage across the RHP angular contact range.

Lubricant: grease or oil.

Mounting data

Chamfer r min: 1.5 mm. Chamfer r1 min: 1.0 mm. Shaft abutment d1 min: 109 mm. Housing abutment D1 max: 141 mm, D2 max: 144 mm. Effective load centre a: 28.7 mm from the bearing face. Internal volume: 53.4 cm³, which sets the grease charge. Pitch circle diameter for lubrication jets: 118.6 mm.

The high point of radial runout is marked with a burnished spot on the inner ring face and a V line on the outer diameter. The V line also shows the direction of the contact angle.

Bearings are mounted with an interference fit on the shaft when the inner ring rotates, a transition fit in the housing for a locating position and a clearance fit for a sliding one.

Quantity and configuration

One bearing. Unit Quantity: 1 Pc. Mounting Arrangement: universally matchable, back-to-back, face-to-face or tandem with another bearing of the same designation.

Interchange guidance

Every cross below sits on the same 100 x 150 x 24 mm envelope at 15°. This bearing is a normal-class execution, so the super-precision crosses listed are a step tighter on tolerance and are marked as related rather than identical.

RHP and NSK share the drawing, so an NSK 7020CTDULP0 is the same bearing under the other group name. Barden 120 is the same envelope on Barden’s own bore-code scheme, and Fafnir 9120 maps to ISO 7020.

Searchable forms of the number: 7020CTDULP0, 7020-C-T-DUL-P0, 7020 C T DUL P0, 7020CTDULP0-1/2PR, 7020C, B7020X2TADULEP1.