SNFAEX130-7CE1DULSuper Precision Angular Contact Ball Bearing – 130 mm ID, 200 mm OD, 33 mm Width, Open, 15 Degree, Light Preload, ABEC 7

Product Description

What this part is

SNFA EX130-7CE1DUL, a super precision single-row angular contact ball bearing. Bore: 130 mm. Outside diameter: 200 mm. Width: 33 mm. Contact angle: 15°. Bore form: straight, cylindrical. Closure: open. ISO equivalent designation: 7026 C. Country of origin: United Kingdom.

Decoding the designation

EX is the SNFA super precision spindle bearing series. 130 is the bore in millimetres. CE1 sets the contact angle at 15°. DUL is a universally matchable duplex code at light preload. The 1/2PR marking on the carton denotes a single bearing out of that pair.

Published specifications

Dynamic load rating: 148 kN (33,300 lbf). Static load rating: 156 kN (35,100 lbf). Limiting speed: 6,300 rpm. Precision class: P4 / ABEC 7. Preload: light. Cage type: machined. Cage material: phenolic. Mounting: universally matchable. Operating temperature range: -30 to 120 °C. Material: bearing steel. Weight: 7.00 lb (3.18 kg).

What a 15 degree contact angle buys

At 15° the ball contact line sits close to the radial plane, so the bearing runs faster and cooler than a 25° execution of the same size and carries less thrust for a given preload. That is the trade a machine-tool spindle designer makes at the front bearing position: 15° for speed and radial stiffness, 25° where axial cutting force dominates. The 6,300 rpm figure and the 120 °C ceiling both follow from the 15° angle and the phenolic cage.

Cage and preload

The machined phenolic cage is lighter than brass and holds oil in its fabric-base laminate, which lowers cage inertia and running temperature at speed. Light preload keeps stiffness up while limiting heat generation. Because the bearing is preloaded, internal clearance does not apply. The universally matchable ground faces mean any two of these bearings mount as a duplex pair, back to back, face to face or in tandem, and reach the DUL preload without shims.

Quantity and configuration

One bearing from a factory duplex pair. It runs as a single universally matchable bearing, and a second matching piece makes the DUL pair.

Interchange guidance

Same envelope, same 15° angle: SKF 7026 CD/P4ADGA, where DGA is SKF’s light preload class; Fafnir 2MM9126WI-SUL, where 2MM is 15° and 9126 maps to ISO 7026 in a single universal light-preload execution; and NSK 7026CTYNSULP4, where C is 15°, TYN is a polyamide cage and SUL is single universal light. Cage material differs across those three, which changes the speed and temperature limits. Searchable variants: EX-130-7-CE-1-DUL, EX130 7CE1 DUL, EX130-7CE1DUL-1/2PR, 7026C, 7026-C.