FAG7009TGP4Super-Precision Angular Contact Ball Bearing — 45 mm ID, 75 mm OD, 16 mm Width, 15° Contact Angle, P4 Class, Machined Phenolic Cage, Light Preload

Product Description

What this part is:

FAG 7009-TG-P4, a single super-precision angular contact ball bearing of the B7009-C-T-P4-UL spindle family. Bore: 45 mm. Outside Diameter: 75 mm. Width: 16 mm. Contact Angle: 15°. Precision Class: P4, ABEC 7. Cage Material: machined phenolic. Cage Type: outer-ring land-riding, with universally flush-ground faces. Rolling Elements: steel balls. Closure Type: open. Preload: universal light. Dynamic Load Rating: 28 kN. Static Load Rating: 14.9 kN. Limiting Speed: 19,000 r/min in grease, 30,000 r/min in oil. Country of origin as marked: Germany.

Decoding the designation:

7009 — the ISO 70 light dimension series at a 45 mm bore, giving the 45 x 75 x 16 mm envelope.

C — 15° contact angle.

TG — machined phenolic cage, guided on the outer ring land, with universally flush-ground ring faces.

P4 — ABEC 7 tolerance class.

UL — universally ground for light preload, so any two of these bearings clamp up to a defined light preload in any pairing.

What these specs mean in practice:

Contact Angle: 15°. A 15° angle routes most of the load path radially through the balls, which is what gives this family its radial stiffness and its speed capability; a 25° execution on the same envelope trades speed for axial capacity. Dynamic Load Rating: 28 kN. Static Load Rating: 14.9 kN. Limiting Speed: 19,000 r/min with grease and 30,000 r/min with oil — the lubricant, not the bearing, sets which of those two applies. Cage Material: machined phenolic, which Schaeffler rates for continuous running to 100 °C; the fabric-base laminate holds oil in its own structure, so the cage keeps feeding the ball track through momentary lubricant starvation. Cage Type: outer-ring land-riding, so the cage is located by the stationary ring and stays stable at speed instead of being thrown outward by centrifugal load. Preload: universal light, ground into the ring faces at the factory.

Mounting data:

Bore: 45 mm. Outside Diameter: 75 mm. Width: 16 mm. The ring faces are universally flush-ground, so the bearing can be stacked back-to-back, face-to-face or in tandem against another bearing of the same designation and the light preload comes up when the rings are clamped solid.

Quantity and configuration:

Unit Quantity: 1 Pc. Supplied as a single universally ground bearing.

Interchange guidance:

Manufacturer part number variants: 7009TGP4, 7009-TG-P4, B-7009-C-T-P4-UL, B7009-C-T-P4S-UL, B7009C.T.P4S.UL. Cross-Reference: Fafnir 2MM9109WI CR, the same 45 x 75 x 16 mm envelope at 15° with a phenolic outer-land-riding cage. A B7009-E execution is a 25° bearing on the same envelope and carries a different speed and thrust profile, so it is a related size rather than a direct substitution.