FAGSuper Precision Angular Contact Ball Bearing 80 x 140 x 26 mm 15 Degree ABEC 7 Medium Preload Polyamide Cage

Product Description

What this part is

A single-row super-precision angular contact ball bearing in the FAG B-series spindle range, 80 mm bore × 140 mm outside diameter × 26 mm width, in the ISO 7216 envelope.

Decoding the designation

B: FAG super-precision spindle bearing series. 7216: single-row angular contact ball bearing, 200 medium dimension series, bore code 16, giving an 80 mm bore. C: 15° contact angle in the FAG scheme. TPA: glass-fibre reinforced polyamide cage. P4S: ABEC 7 dimensional accuracy with ABEC 9 running accuracy. UM: universally ground single bearing, medium preload.

Specifications

Bore: 80 mm (3.1496 in). Outside Diameter: 140 mm (5.5118 in). Overall Width: 26 mm (1.0236 in). Contact Angle: 15°. Precision Class: P4S — ABEC 7 dimensional, ABEC 9 running. Preload: Medium (M). Number Of Rows: 1. Cage Material: Glass-fibre reinforced polyamide (PA66). Rolling Elements: Steel balls. Closure Type: Open, both faces. Bore Type: Straight. Arrangement / Configuration: Universally ground single (U). Base Number: 7216 C. Series: B7200. Design Units: Metric.

What these specs mean in practice

A single-row angular contact ball bearing takes thrust in one direction, which is why these bearings are normally used in pairs or stacks so the arrangement carries thrust both ways. A 15° contact angle biases the bearing toward speed and radial rigidity, and carries less thrust than a 25° bearing in the same envelope. Medium preload sits between the low-heat light setting and the maximum-stiffness heavy setting, and is the usual default where a spindle needs both rigidity and speed.

The 7216 is the heavier of the two 80 mm bore options: against a 7016 in the same bore it puts a larger ball complement on a bigger pitch diameter, which buys load capacity and stiffness and costs speed. A glass-fibre reinforced polyamide cage is lighter and quieter than machined brass and places the continuous working temperature ceiling near 120 °C.

Quantity and configuration

Single bearing, 1 Pc. Universal grinding allows it to be stacked back-to-back, face-to-face or in tandem with matching bearings of the same designation.

Interchange guidance

Closest 15° medium-preload singles in other schemes are the Timken Fafnir 2MM216WI-SUM, NSK 7216CTYSUM, RHP 7216CTSUMP4 and SKF 7216 CD/P4ADGC, which carry P4 precision rather than the P4S running accuracy. The B7216-E at 25°, the UL and UH preload versions, and the 7016 in the lighter series at the same 80 mm bore are related sizes rather than interchanges.