RHP7004CTBSULP6Super-Precision Angular Contact Ball Bearing – 20 mm ID, 42 mm OD, 12 mm Width, Open, 15° Contact Angle, Light Preload, Single Universal

Product Description

What this part is

RHP 7004CTBSULP6 super-precision single-row angular contact ball bearing. Bore: 20 mm. Outside Diameter: 42 mm. Overall Width: 12 mm. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: carbon chrome bearing steel to SAE 52100, through hardened and heat treated. Series: 7000, ISO dimension series 10. Item Weight: 0.069 kg (0.15 lb).

Decoding the designation

Contact Angle: 15°. Cage Material: laminated phenolic resin. Cage Type: machined, outer-ring guided. Preload: light. Mounting Arrangement: single universal. Precision Class: P6, equivalent to BS292 EP3 and ABEC 3. Running Accuracy – Radial And Axial Runout: P6. Searchable forms of the number: 7004CTBSULP6, 7004-C-TB-SUL-P6, 7004 C TB SUL P6.

Load ratings and speed

Dynamic Load Rating: 11.1 kN (2,495 lbf). Static Load Rating: 6.55 kN (1,472 lbf). Limiting Speed: 53,600 rev/min on oil/air lubrication and 33,100 rev/min on grease. Effective load centre: 10.1 mm. Maximum Operating Temperature: 120 °C.

What these specs mean in practice

A 15° contact angle favours speed and radial rigidity over axial capacity, which is why it is the standard machine-tool spindle angle. Light preload develops 49 N of axial preload and 28 N/µm of axial stiffness in a back-to-back pair, holding true rolling contact at high speed with less heat than a medium or heavy setting. Universal face control means the rings are flush ground, so any two of these bearings clamp together back-to-back or face-to-face at the rated preload with no custom spacer, and share load equally in tandem.

Mounting data

Shaft abutment diameter d1 min: 25 mm. Housing abutment diameter D1 max: 37 mm. Housing abutment D2 max: 39.5 mm. Bearing fillet radius r min: 0.6 mm. Fillet radius r1 min: 0.3 mm. Internal free volume: 3.1 cm³. Pitch circle diameter for lubrication jets: 28.2 mm. Lubricant: grease or oil.

Quantity and configuration

Unit Quantity: 1 Pc. The bearing is preload-set at manufacture rather than clearance-set, so no radial clearance class applies.

Interchange guidance

Same-envelope 15° super-precision executions in other schemes: SKF 7004 CDGA/P4A, FAG B7004-C-T-P4S-UL, NSK 7004CTRSU and Fafnir 2MM9004WI. Those are built to P4 or P4S, so they are a tighter class in the same 20 x 42 x 12 mm envelope. A 7004A5 or 7004E in this envelope carries a 25° contact angle, which makes it a related size rather than a substitution.