RHP7020TDUMP4Super-Precision Angular Contact Bearing Matched Pair 100x150x24 mm 40° Medium Preload ABEC 7

Product Description

What this part is:

An RHP 7020TDUMP4 matched duplex pair of super-precision single-row angular contact ball bearings in the 72 dimension series. Each bearing is 100 mm bore, 150 mm outside diameter, 24 mm wide, giving 48 mm total stack width. Open on both faces, phenolic cage.

Decoding the designation:

• 7020 — single-row angular contact, 100 mm bore, 72 series
• No angle letter — 40° contact angle in the RHP scheme
• T — phenolic cage
• DU — duplex, ground as a matched set
• M — medium preload
• P4 — ABEC 7 precision

What these specs mean in practice:

A 40° contact angle is the highest-thrust option in the 7000 family and gives the greatest axial stiffness at the cost of speed capability, which suits ball-screw ends and heavily thrust-loaded spindles. Medium preload sits between the light grade used for high-speed running and the heavy grade used where deflection under load matters most.

Published specifications:

• Bore: 100 mm
• Outside diameter: 150 mm
• Width: 24 mm per bearing, 48 mm stacked
• Contact angle: 40°
• Precision: P4 / ABEC 7
• Preload: medium, factory matched
• Rows: 1 per bearing
• Closure: open

Quantity and configuration:

Matched duplex pair. 2 Pcs per sale unit.

Fitting notes:

Each bearing carries thrust in one direction; the pair mounted back-to-back or face-to-face covers both. The etched marks on the outer rings align to hold the matched offset as ground.

Interchange guidance:

Same-spec matched pairs at 40° and medium preload: Nachi 7020BDUM, NSK 7020BDBP4. The 7020C at 15° and the 7020E at 25° share the envelope with different contact angles and are related sizes rather than interchanges.