FAGB7204C.TPA.P4S.ULSuper-Precision Spindle Bearing – 20 mm ID, 47 mm OD, 14 mm Width, Open, 15° Contact Angle, Light Preload, ABEC 7/9

Product Description

What this part is

FAG B7204C.TPA.P4S.UL super-precision spindle bearing, a single-row angular contact ball bearing in the B72 series. Bore: 20 mm. Outside Diameter: 47 mm. Overall Width: 14 mm. Contact Angle: 15°. Precision Class: P4S (ABEC 7/9). Cage Material: Phenolic, fabric-base laminate. Cage Type: Machined window. Preload: Light. Mounting Arrangement: Universally matchable. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1. Rolling Elements: Balls. Bearing Material: Bearing steel. Series: 7200. GTIN: 4012801152709. Country of Origin: Germany.

Decoding the designation

B marks the Schaeffler spindle-bearing range, built with large steel balls for high rigidity. 7204 gives the ISO series 02 envelope at a 20 mm bore. C is the contact angle code and fixes it at 15°. TPA is the fabric-base laminate phenolic cage, machined as a window cage. P4S is the precision grade, a step above P4 on running accuracy. UL is universal light preload.

What these specs mean in practice

Dynamic Load Rating: 17.2 kN (3,867 lbf). Static Load Rating: 8.0 kN (1,799 lbf). Limiting Speed: 48,000 rpm on minimal-quantity oil lubrication, 32,000 rpm on grease. Item Weight: 0.25 lb. Lubricant: grease or oil. The large-ball B72 construction pairs high load capacity with high rigidity at medium spindle speeds. A 15° contact angle carries more radial load and runs faster than a 25° or 40° angle, at lower thrust capacity. The machined phenolic window cage is light and quiet at speed. P4S holds running accuracy tighter than P4, giving lower runout at the tool.

Quantity and configuration

Unit Quantity: 1 Pc. UL marks a universally matchable bearing: any two mount back-to-back, face-to-face or in tandem and reach the rated light preload when clamped, with no ground spacer.

Fitting notes

Bore Type: Straight, for an interference fit on the shaft with the inner ring rotating. Closure Type: Open, so lubricant is supplied from the housing. This bearing is a non-separable unit: the rings and the ball-and-cage assembly are solid and stay together. Harmonization Code: 8482.10.50.28.

Interchange guidance

Cross-Reference 1: SKF 7204 CDGA/P4A. Cross-Reference 2: NSK 7204CTRSULP4Y. Cross-Reference 3: NTN 7204CVDUJ74. Cross-Reference 4: Timken Fafnir 2MM204WI-SUL. All four are the same envelope at the same 15° contact angle in a universally matchable light-preload execution. Searchable designation forms: B7204C.TPA.P4S.UL, B7204-C-T-P4S-UL, B7204CTPAP4SUL, B7204C-TPA-P4-K5-UL, B7204CTPAP4K5UL and 7204C.