GMNS6210CTXMA7ULSuper-Precision Angular Contact Ball Bearing – 50 mm ID, 90 mm OD, 20 mm Width, Open, 15° Contact Angle, Light Preload, ABEC 7, PEEK Cage

Product Description

What this part is

GMN S6210CTXMA7UL super-precision single-row angular contact ball bearing. Bore: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm. Number Of Rows: 1. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: chrome bearing steel. Series: GMN S 6200, which GMN files under Angular Contact, S Series.

Decoding the designation

Contact Angle: 15°, given by the C. In GMN’s S-series scheme C is 15° and E is 25°. Cage Material: PEEK. Cage Type: moulded, given by the TXM. Precision Class: ABEC 7, given by the A7. Preload: light, given by the L. Mounting Arrangement: universal ground, given by the U. Maximum Operating Temperature: 250 °C, set by the PEEK cage. Searchable forms of the number: S6210CTXMA7UL, S-6210-C-TXM-A7-UL, S 6210 C TXM A7 UL, S6210CTXM, 7210C.

What these specs mean in practice

A 15° contact angle favours speed and radial rigidity over thrust capacity, which is the standard machine-tool spindle choice. A PEEK cage takes this bearing to a 250 °C ceiling, well above the 120 °C of a laminated phenolic cage and the 100 to 120 °C of a glass-filled polyamide one, and PEEK keeps its stiffness and dimensional stability across that range while staying light enough for high cage speeds. ABEC 7 tolerances hold bore, outside diameter, radial runout and face runout tight enough for a precision spindle. Universal grinding means the inner and outer rings are the same width and flush ground, so any two of these bearings clamp back-to-back or face-to-face at the rated light preload with no custom spacer, and share load equally in tandem.

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. Lubricant: grease or oil.

Interchange guidance

Carton designations carried on this part: 2MM210WI CR DUL and 7210C T P4 DUL. The Fafnir 2MM prefix and the ISO C code both give the same 15° angle, and P4 is the same class as A7. Same-envelope 15° super-precision executions in other schemes: SKF 7210 CD/P4A, FAG B7210-C-T-P4S-UL, NSK 7210CTRSUL and RHP 7210CTSULP4. Those carry laminated phenolic cages rather than PEEK, so they sit at a much lower temperature ceiling. A 7210A5, 7210AC or a GMN S6210E carries a 25° contact angle in this 50 x 90 x 20 mm envelope, which makes it a related size rather than a substitution.