GMNS 61904 C TA P4 DULAngular Contact Ball Bearing — 20 mm ID, 37 mm OD, 9 mm Width, 15° Contact Angle, P4, Phenolic Cage, Universal Light Preload

Product Description

What this part is:

GMN S 61904 C TA P4 DUL is a single-row angular contact spindle bearing from GMN’s S series on the 71904 (7904) size, universally matched with light preload. Open, 15° contact angle, P4 precision, phenolic cage. Unit Quantity: 1 Pc, one bearing from a factory DUL pair.

Decoding the designation:

S — GMN standard spindle bearing series, non-separable.

61904 — 619 dimension series, 20 mm bore: the 71904 size, 20 x 37 x 9 mm.

C — 15° nominal contact angle.

TA — laminated phenolic resin cage guided on the outer ring.

P4 — GMN tolerance class P4, corresponding to P4S per DIN 628-6.

DUL — duplex universal matching with light preload. GMN light preload for this size: 35 N.

-1/2PR — one bearing of a pair.

Specifications:

Bore Diameter: 20 mm. Outside Diameter: 37 mm. Overall Width: 9 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Preload: L (light), 35 N. Arrangement: Universal matching (DUL), half pair. Cage Material: Phenolic, rated by GMN to 120 °C. Cage Type: Machined, outer-ring guided. Closure Type: Open. Dynamic Load Rating: 7,250 N. Static Load Rating: 4,600 N. Limiting Speed: 45,000 rpm grease; 60,000 rpm oil. Item Weight: 0.034 kg (0.07 lb).

Dimensions and mounting:

Number of balls: 15. Ball diameter: 4.762 mm. Pitch circle diameter: 28.5 mm. Abutment diameter inner ring da min: 22.5 mm. Abutment diameter outer ring Da max: 35.1 mm. Oil nozzle position dT: 26.9 mm. Chamfer rs: 0.3 mm. GMN preload values for this size: L 35 N, M 110 N, S 220 N. Axial rigidity of a pair at light preload: 26 N/µm. Universally ground for back-to-back, face-to-face or tandem mounting.

Compatibility and replacement:

SKF 71904 CD/P4A, FAG B71904-C-T-P4S, NSK 7904CTYNSULP4, Fafnir 2MM9304WI, NTN 7904UADG/GNP4 and SNFA SEB 20 /S 7CE1 are 20 x 37 x 9 mm, 15°, P4-class bearings with their own cage materials and preload levels. MPN Variants: S61904CTAP4DUL, S61904CTAP4DUL-1/2PR, S 61904 C TA P4 DUL, S61904-C-TA-P4-DUL, S61904CTA, 71904C, 7904C.

Frequently asked questions:

What are the size and contact angle of the GMN S61904CTAP4DUL?

20 x 37 x 9 mm with a 15° contact angle.

What are the load ratings and speed limits?

Dynamic Load Rating 7,250 N, Static Load Rating 4,600 N, Limiting Speed 45,000 rpm with grease and 60,000 rpm with oil.

What preload does the DUL designation give?

Light preload of 35 N, universal matching for back-to-back, face-to-face or tandem mounting.