Koyo7005CGLAngular Contact Ball Bearing – 25 mm ID, 47 mm OD, 12 mm Width, Open, 15° Contact Angle, Light Preload, Class 5 Precision

Product Description

What this part is

Koyo 7005CGL single-row angular contact ball bearing. Bore: 25 mm. Outside Diameter: 47 mm. Overall Width: 12 mm. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: chrome bearing steel. Series: 7000, ISO dimension series 10. Item Weight: 0.18 lb (0.082 kg).

Decoding the designation

Contact Angle: 15°, given by the C in the Koyo scheme. Precision Class: Class 5, equivalent to P5 and ABEC 5, given by the 5 in the full designation 7005C-5GL. Preload: light, given by GL. Mounting Arrangement: universally matched. Searchable forms of the number: 7005CGL, 7005C-5GL, 7005 C 5 GL, 7005CTUL, 7005-C-5-GL/UL-PA.

Load ratings and speed

Dynamic Load Rating: 15.4 kN (3,462 lbf). Static Load Rating: 8.0 kN (1,798 lbf). Limiting Speed: 44,500 rev/min on oil lubrication and 32,500 rev/min on grease. Lubricant: grease or oil.

What these specs mean in practice

A 15° contact angle favours speed and radial rigidity over thrust capacity, which is why it is the standard machine-tool spindle angle. Class 5 tolerances hold bore, outside diameter and running accuracy tighter than a standard-class bearing, so the shaft is located more precisely and runs quieter at speed. Light preload holds true rolling contact between the balls and the raceways with less heat than a medium or heavy setting, and the universally matched rings clamp together back-to-back or face-to-face at the rated preload with no custom spacer.

Quantity and configuration

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

Interchange guidance

The 25 x 47 x 12 mm envelope with a 15° contact angle is shared with the NSK 7005C, the NTN 7005C and the Nachi 7005C. An SKF 7005 CDGA/P4A and a FAG B7005-C-T-P4S-UL sit in the same envelope at P4 and P4S, a tighter class than Class 5. A 7005A5, 7005AC or 7005E in this envelope carries a 25° contact angle, which makes it a related size rather than a substitution.