FAGB7012CTPAP4ULSuper-Precision Spindle Bearing – Straight Bore, 60 mm ID, 95 mm OD, 18 mm Width, Open, 15° Contact Angle, P4S, Universal Light Preload

Product Description

What this part is

FAG B7012C.TPA.P4.UL super-precision spindle bearing, B70 range, 60 mm bore x 95 mm outside diameter x 18 mm width. Bore: 60 mm. Outside Diameter: 95 mm. Overall Width: 18 mm. Bore Type: Straight. Number Of Rows: 1. Rolling Elements: Balls. Closure Type: Open. Contact Angle: 15°. Precision Class: P4S, Schaeffler’s own class above P4 to ISO 492. Preload: Light. Cage Material: Fabric-base laminated phenolic. Cage Type: Outer-ring guided, machined. Design Units: Metric. Material: Chrome bearing steel. GTIN: 4012801167369. Country of Origin: Germany.

Decoding the designation

B70: Schaeffler’s spindle bearing range, adjusted in pairs or sets. 7012: 60 mm bore in the 70 dimension series. C: 15° contact angle. TPA and T both denote the laminated fabric cage. P4S: tolerance class P4S. U: single bearing. L: light preload. Schaeffler’s current designation for this bearing is B7012-C-T-P4S-UL, and its own catalogue entry lists B7012C.TPA.P4.UL among the designations it replaces. Searchable variants: B-7012-C-TPA-P4-UL, B 7012 C TPA P4 UL, B7012C.T.P4S.UL, B7012-C-T-P4S-UL, 2MM9112WI-SUL.

What these specs mean in practice

Dynamic Load Rating: 40,000 N. Static Load Rating: 23,800 N. Fatigue Load Limit: 2,500 N. Limiting Speed, grease lubrication: 15,000 rpm. Limiting Speed, oil lubrication: 22,000 rpm. Distance Between Pressure Cone Apexes: 19.4 mm. Item Weight: 0.388 kg (0.86 lb). Preload Force at light class: 209 N. Axial Rigidity at light class: 64 N/µm. Lift-off Force at light class: 647 N. Maximum Operating Temperature: 100 °C. Minimum Operating Temperature: -30 °C. A 15° contact angle favours speed and radial stiffness over thrust capacity, which is the point of the C execution in this range. The laminated fabric cage is outer-ring guided and suits continuous running to 100 °C. Lubricant: grease or oil.

Quantity and configuration

Unit Quantity: 1 Pc. Arrangement: single bearing, universally matchable. Two or more bearings of this designation combine to give light preload in a back-to-back, face-to-face or tandem set. Internal Clearance: N/A — a universally matchable preloaded execution is set by face grinding rather than by a radial clearance class.

Fitting notes

Diameter of Shaft Abutment: 67 mm, tolerance h12. Diameter of Housing Abutment: 88 mm, tolerance H12. Maximum Shaft or Housing Fillet Radius: 1 mm, and 0.6 mm on the second face. Chamfer Dimension: 1.1 mm minimum both sides. Clamping Diameter Etk: 70.9 mm to 74.5 mm.

Interchange guidance

Same-specification equivalents: FAG B7012-C-T-P4S-UL, which is Schaeffler’s current designation for this bearing, Fafnir 2MM9112WI-SUL, NSK 7012CTRSULP4, SKF 7012 CD/P4ADGA, RHP 7012CTSULP4. A B7012-E execution shares the 60 x 95 x 18 mm envelope at a 25° contact angle, which is a related size rather than a substitution.