FAGHCS71907ETP4SULAngular Contact Ball Bearing – 35 mm ID, 55 mm OD, 10 mm Width, Sealed, 25°, ABEC 7 / P4, Hybrid Ceramic

Product Description

What this part is

FAG HCS71907E.T.P4S.UL is a hybrid ceramic, sealed, super-precision spindle angular contact ball bearing. Bore Diameter: 35 mm. Outside Diameter: 55 mm. Overall Width: 10 mm. Contact Angle: 25°. Number Of Rows: 1. Rolling Elements: Ceramic ball. Bore Type: Straight. Closure Type: Lip seals both sides, non-contact. Item Weight: 0.075 kg (0.17 lb). GTIN: 4012801483612.

Decoding the designation

HCS — Hybrid ceramic execution with a sealed outer ring. Silicon nitride balls run against steel rings; the lower ball mass cuts centrifugal load and heat at speed, and the seals retain the grease charge.

B719 section — The extra-light 719 cross-section, the thinnest in the spindle range.

71907 — ISO size code. Bore 35 mm, outside diameter 55 mm, width 10 mm.

E — Contact angle 25°. The angle comes from this letter, not from the HCS prefix.

T — Fabric-base laminate phenolic cage, machined.

P4S — Precision Class: ABEC 7 / P4.

UL — Universally matchable in pairs or sets.

What these specs mean in practice

Dynamic Load Rating: 6,100 N. Static Load Rating: 3,450 N. Limiting Speed: 40,000 rpm grease. Fatigue load limit, radial: 275 N.

Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Cage Type: Machined. Lubricant: Grease. Operating temperature range: -30 °C to +80 °C.

Ceramic balls weigh about 40 per cent of steel balls of the same diameter, which is why this execution reaches 40,000 rpm on a grease charge alone while carrying a lower load rating than a steel-ball 71907. Series: HCS719. Base Number: HCS71907.

Mounting data

Preload per matched pair: light 26 N, medium 78 N, heavy 155 N.

Mounting Arrangement: Universal — back-to-back (O), face-to-face (X) or tandem. Internal Clearance: N/A; the bearing is preload-adjusted rather than clearance-set.

Quantity and configuration

Unit Quantity: 1 Pc. Single bearing, universally ground, ready to be matched with further pieces of the same designation.

Interchange guidance

Cross-references on hybrid ceramic sealed spindle bearings are deliberately few. A steel-ball 71907 of the same envelope is a related size rather than an interchange: it carries a higher load rating and a lower speed rating, so substituting one for the other changes the spindle’s behaviour. Same-execution equivalents: SKF 71907 ACE/HCP4A and NSK 79BNR10H.

Searchable forms of the number: HCS71907E.T.P4S.UL, HCS71907ETP4SUL, HCS-71907-E-T-P4S-UL, HCS 71907 E T P4S UL, 71907, 7907.