FAG7219TGP4Super Precision Angular Contact Spindle Bearing – 95 mm ID, 170 mm OD, 32 mm Width, 15 Degree Contact Angle, Laminated Fabric Phenolic Cage, P4 Precision, Light Preload

Product Description

What this part is

FAG 7219TGP4 super-precision angular contact spindle bearing. Series B72. Bore: 95 mm. Outside diameter: 170 mm. Width: 32 mm. Contact angle: 15°. Single row of balls, universally matchable, supplied as a single bearing that can be mounted alone or built into a matched pair or set.

Decoding the designation

Contact angle: 15°, the C execution of the B72 range. T: laminated fabric cage, a phenolic material. G: universal matching, so any two bearings of this designation pair back-to-back, face-to-face or in tandem without shims. P4: ABEC 7 tolerance class. L: light preload. Carton and cross designations in circulation: B7219C.T.P4S.UL, B7219C.TPA.P4.UL, B 7219 C A P4 UL, 7219-TG-P4, 7219C, 219.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is why it is the standard choice for the front bearing on a high-speed machine tool spindle. Basic dynamic radial load rating: 130 kN. Basic static radial load rating: 81 kN. Fatigue load limit, radial: 7.5 kN. Limiting speed: 13 000 rpm on oil, 8 000 rpm on grease. Light preload: 760 N, giving 115 N/µm axial rigidity and a 2 353 N lift-off force. A laminated fabric cage runs quieter and tolerates high acceleration and marginal lubrication better than steel or brass.

Quantity and configuration

One bearing, single row, universal execution. Universal matching means a second bearing of the same designation completes a duplex pair in any arrangement.

Fitting notes

Shaft shoulder diameter: 110.5 mm to h12. Outer ring shoulder diameter: 154 mm to H12. Maximum recess radius: 2.1 mm. Minimum chamfer: 2.1 mm. Distance between pressure-cone apexes: 33.8 mm. Grease injection pitch diameter: 119.1 to 126.9 mm. Operating temperature range: -30 °C to 100 °C. Weight: 5.89 lb (2.672 kg).

Application types

Machine tool spindles, grinding spindles, high-speed milling heads, and any spindle where running accuracy and speed matter more than raw thrust capacity.

Interchange guidance

Direct equivalents at the same 15° angle: FAG B7219-C-T-P4S-UL, B7219C.T.P4S.UL, B7219C.TPA.P4.UL. Related sizes on the same 95 x 170 x 32 mm envelope with a different contact angle: FAG B7219-E-T-P4S (25°) and Fafnir 3MM219WI (25°).