SKFSuper Precision Angular Contact Ball Bearing – Straight Bore, 70 mm ID, 110 mm OD, 20 mm Width, Open, 15° Contact Angle, Universally Matchable, Extra Light Preload

Product Description

What this part is: An SKF 7014 CDGA/P4A super-precision single-row angular contact ball bearing. Bore 70 mm, outside diameter 110 mm, width 20 mm. Straight bore, open on both faces, 15° contact angle, phenolic cage. Decoding the designation: 7014 is the ISO 70 dimension series at a 70 mm bore. CD marks the 15° contact angle in SKF’s super-precision scheme, where ACD would denote 25°. P4A is SKF’s super-precision tolerance class, equivalent to ABEC 7. DGA — universally matchable, extra light preload. Cross-confirmed designations: The carton also carries the Timken Fafnir number 2MM9114WI-CR-DUL. In the Fafnir scheme the 2MM prefix means 15° and the 9114 maps to the ISO 7014 envelope, so both numbering systems agree on the size and the contact angle. What these specs mean in practice: A 15° contact angle favours speed and radial stiffness over thrust capacity, which makes it the usual choice for machine-tool spindles running at high rpm. Extra light preload removes internal play while keeping frictional torque and running temperature low, which suits high-speed operation. The phenolic cage is light, self-lubricating and tolerant of momentary lubricant starvation, with a service range of -30 °C to 120 °C. Load ratings: Basic dynamic radial load rating 52.0 kN and basic static radial load rating 45.5 kN. Limiting speed 15,000 rpm. Weight 1.48 lb. Quantity and configuration: One bearing, universally matchable, so it will pair with another of the same designation and arrive at the extra light preload the DGA code specifies. Because preload is set at manufacture, radial internal clearance does not apply. Supplied without a snap ring. Interchange guidance: The ISO base number is 7014C. Same angle and class: FAG B7014-C-T-P4S-UL, NSK 7014CTYNSULP4 and Timken Fafnir 2MM9114WI-CR-DUL. A 7014 ACD in the same envelope carries a 25° angle, and a 7014 CDGB or CDGC carries a heavier preload; these are related sizes, not substitutions.