Koyo7010C-5GLP4Super-Precision Angular Contact Ball Bearing – 50 mm ID, 80 mm OD, 16 mm Width, Open, 15° Contact Angle, Polyamide Cage, Light Preload

Product Description

What this part is: Koyo (JTEKT) 7010C-5GLP4 super-precision angular contact ball bearing, single row, open. Bore: 50 mm. Outside diameter: 80 mm. Width: 16 mm. Contact angle: 15°. Precision class: P4 (ABEC 7). Bore form: straight. Cage material: polyamide resin. Decoding the designation: 7010: 50 mm bore in the ISO 70 dimension series. C: 15° contact angle in Koyo’s angular contact scheme. GL: light preload. FG: moulded polyamide resin cage. P4: ABEC 7 tolerance class. UL: universally ground, so like bearings match to the catalogue preload in any arrangement. What these specs mean in practice: A 15° contact angle is the high-speed end of the angular contact range: it carries less thrust than a 25° or 40° bearing and runs faster and cooler in return. Light preload removes internal play without adding much running torque, which keeps spindle heat generation down. A polyamide resin cage is lighter than steel or brass, damps ball-pocket noise and suits grease lubrication, with a service ceiling of 120 °C. Quantity and configuration: Sold as 1 Pc. Universally ground, so two or more of these mount back-to-back, face-to-face or in tandem and reach light preload on assembly with no shims or spacers. Fitting notes: Straight bore, open on both faces, so shaft and housing fits, lubrication and sealing come from the spindle design. Interference on the inner ring and a located outer ring are the normal arrangement for a preloaded pair. Interchange guidance: Same envelope and contact angle: Fafnir 2MM9110WI (the 9100WI series maps to ISO 70xx, so 9110 is a 7010), SKF 7010 CD/P4A, NSK 7010CTYNSULP4, RHP/NSK 7010CTP4. Cage material and preload code differ across these executions, so speed and temperature limits move with them.