FAGB7004CTPAP4K5DULSpindle Angular Contact Ball Bearing – 20 mm ID, 42 mm OD, 12 mm Width, Open, 15° Contact Angle, Light Preload, Universal Ground

Product Description

What this part is

FAG B7004C.TPA.P4S.UL single-row angular contact spindle bearing, carton designation B7004 C TPA P4 K5 UL. Bore: 20 mm. Outside Diameter: 42 mm. Overall Width: 12 mm. Number Of Rows: 1. Rolling Elements: Ball, 12 balls of 6.35 mm diameter. Bore Type: Straight. Closure Type: Open. Bearing Material: chrome steel rings and chrome steel balls. Series: B70, ISO dimension series 10. Item Weight: 0.07 kg (0.15 lb).

Decoding the designation

Contact Angle: 15°, from the C code on a B70 designation. Cage Material: fabric-base laminate phenolic. Cage Type: machined, outer-ring guided. Precision Class: P4, equivalent to ABEC 7 and ISO Class 4. Preload: light, from the UL code. Mounting Arrangement: universal. Searchable forms of the number: B7004C.TPA.P4S.UL, B7004CTPAP4K5DUL, B-7004-C-TPA-P4-K5-UL, B7004 C TPA P4 K5 UL, 7004C.

Load ratings and speed

Dynamic Load Rating: 10.3 kN (2,315 lbf). Static Load Rating: 4.25 kN (955 lbf). Reference Speed: 60,000 rev/min. Limiting Speed: 38,000 rev/min. Operating Temperature Range: −30 °C to 100 °C.

What these specs mean in practice

The C execution of the B70 range uses a 15° contact angle: high speed, high radial rigidity, modest thrust capacity. The E execution’s 25° reverses both. This size runs 12 balls of 6.35 mm — a large-ball, low-count arrangement, which is what gives a slender 42 mm outside diameter a 10.3 kN dynamic rating and high stiffness per millimetre of section. Light preload holds rolling contact true to 38,000 rev/min without the heat a medium or heavy setting adds. The fabric-base laminate phenolic cage is machined and guided on the outer ring land, so a stationary surface steadies it at speed; its low mass and self-lubricating character keep cage friction down, and it sets the 100 °C ceiling.

Quantity and configuration

Unit Quantity: 1 Pc. Internal Clearance: N/A. The UL code makes this a preload-set bearing rather than a clearance-set one, so no radial clearance class applies. Universal grinding means any two of these clamp together back-to-back or face-to-face at the rated light preload with no custom spacer, and share load equally in tandem.

Interchange guidance

Carton designation carried on this part: 2MM9104WI CR SUL, the Fafnir equivalent, whose 2MM prefix independently confirms the 15° angle. Same-envelope 15° super-precision executions in other schemes: SKF 7004 CD/P4A, NSK 7004CTRSUL and RHP 7004CTSULP4. A B7004-E execution carries a 25° contact angle in this envelope, which makes it a related size rather than a substitution.