RHP7019CTDULP4Super Precision Angular Contact Ball Bearing – Straight Bore, 95 mm ID, 145 mm OD, 24 mm Width, Open, 15° Contact Angle, Light Preload, ABEC 7 / P4

Product Description

What this part is

RHP 7019CTSULP4 super-precision single-row angular contact ball bearing. Bore: 95 mm. Outside Diameter: 145 mm. Width: 24 mm. Contact Angle: 15°. Precision Class: P4, equivalent to ABEC 7 and ISO Class 4. Dynamic Load Rating: 73.5 kN. Static Load Rating: 73 kN. Cage Material: Laminated phenolic resin. Cage Type: Outer ring guided. Bore Type: Straight. Closure Type: Open. Rolling Elements: Steel balls. Number Of Rows: 1. Series: 7000, ISO dimension series 10.

Decoding the designation

7019 is the type and size: single-row angular contact, ISO dimension series 10, bore code 19 for a 95 mm bore. C sets the contact angle at 15°. T is the outer-ring-guided laminated phenolic resin cage. SU marks a single universally ground bearing. L sets light preload. P4 is the precision grade. Searchable variants of the number: 7019C, 7019-C-T-SUL-P4, 7019 CT SUL P4, 2MM9119WI CR SUL, B7019X2TAULEP7.

What these specs mean in practice

Limiting Speed: 14,000 r/min on oil-air lubrication and 8,600 r/min on grease. The two figures are the published pair for a single bearing under light external load. A 15° contact angle favours speed and radial stiffness, where a 25° angle in the same envelope trades speed for axial capacity. Preload: Light, 540 N axial. Axial Stiffness: 124 N/µm. Light preload is the most widely specified level and keeps the highest speed capability of the four grades. Internal Clearance: N/A, as preload and mounted clearance are set against one another. Maximum operating temperature for a laminated phenolic resin cage is 120 °C. Item weight: 1.21 kg (2.67 lbs).

Mounting dimensions

Shaft abutment diameter d1: 104 mm minimum. Housing abutment diameter D1: 136 mm maximum. Outer ring abutment D2: 139 mm maximum. Chamfer r: 1.5 mm minimum. Chamfer r1: 1.0 mm minimum. Effective Load Centre a: 28.1 mm. Internal volume: 51.8 cm³, the figure grease quantity is calculated from. Bearing tolerances are to P4: bore deviation −7.5 µm, radial runout of the assembled inner ring 6 µm.

Quantity and configuration

Unit Quantity: 1 Pc. Universal face control means the inner and outer rings are the same width and the faces are ground at manufacture to the specified preload, so single universal bearings combine into back-to-back, face-to-face or tandem sets at the stated preload without ground spacers. The high point of radial runout is marked with a burnished spot on the inner ring face and a V line on the outer ring diameter, and the V line also indicates the direction of the contact angle.

Interchange guidance

Cross-references: SKF 7019 CDGA/P4A, FAG B7019-C-T-P4S-UL, NSK 7019CTYNSULP4. Matching envelope, contact angle and preload class across makers gives a like-for-like substitution; the same 95 x 145 x 24 mm envelope at 25° is a related size with different speed and thrust behaviour.