RHP7008CTSUMP4Angular Contact Ball Bearing – 40 mm ID, 68 mm OD, 15 mm Width, 15° Contact Angle, Medium Preload, ABEC 7 / P4.

Product Description

What this part is:

RHP 7008-C-T-SUM-P4 super-precision single-row angular contact ball bearing, universally ground for matching. Bore Diameter: 40 mm. Outside Diameter: 68 mm. Overall Width: 15 mm. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Unit Quantity: 1 Pc.

Decoding the designation:

7 — single-row angular contact ball bearing.

0 — RHP dimension series 0, ISO series 10 (the 70xx light section).

08 — bore code, multiplied by five for a 40 mm bore.

C — 15° contact angle.

T — laminated phenolic resin cage, guided on the outer ring. Maximum recommended operating temperature 120 °C.

SU — single universal: one bearing with universal face control, ground so any two of the same designation combine as a matched pair at the stated preload.

M — medium preload. Axial preload 290 N and axial stiffness 77 N/µm when two are paired; the light grade is 120 N and the heavy grade 590 N at this size.

P4 — RHP precision grade P4: ISO Class 4, ABEC 7, British Standard EP7.

B7008X2TASUMEP7 — the same bearing in RHP’s B-series scheme: X2 is the 15° contact angle, TA the outer-ring centred cage, SUM the medium-preload universal single, EP7 the BS292 precision grade.

2MM9108WICRSUM — the Fafnir equivalent carried on the same carton: 2MM is 15°, 9108WI the ISO 7008 envelope with low shoulders on both rings, CR the phenolic cage, SUM the medium-preload universal single.

Specifications:

Dynamic Load Rating: 20,600 N. Static Load Rating: 15,900 N. Limiting Speed: 21,000 rpm grease; 34,000 rpm oil. Running Accuracy: inner ring radial runout Kia 4 µm maximum, outer ring radial runout Kea 5 µm maximum. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Cage Type: Outer-ring guided. Closure Type: Open. Bore Type: Straight. Rolling Elements: Ball. Number Of Rows: 1. Preload: Medium (M). Mounting Arrangement: Single universal (SU). Lubricant: grease or oil. Maximum Temperature: 120 °C. Bearing Material: Chrome bearing steel (SAE 52100). Item Weight: 0.189 kg (0.42 lb).

Dimensions and mounting:

Shaft abutment diameter: 46 mm minimum. Housing abutment diameters: 62 mm maximum and 63 mm maximum. Chamfer dimensions: r 1.0 mm minimum, r1 0.6 mm minimum. Effective load centre a: 14.7 mm. Internal free volume: 8.2 cm³. Lubrication jet pitch circle diameter: 50.0 mm. Limiting speed factors for sets: 0.60 for a back-to-back medium-preload pair, 0.95 for a spring-loaded tandem pair.

Compatibility and replacement:

Cross-references with the same 40 x 68 x 15 mm envelope, 15° contact angle and P4 class: SKF 7008 CD/P4A, FAG B7008-C-T-P4S-UM, NSK 7008CTRSUMP4, NTN 7008UCG/GNP4, GMN S6008 C TA P4, Timken/Fafnir 2MM9108WICRSUM, Koyo 7008C-5GLFGP4, SNR 7008CVUJ84. MPN Variants: 7008CTSUMP4, 7008-C-T-SUM-P4, B7008X2TASUMEP7, 2MM9108WICRSUM, 7008C.

Frequently asked questions:

What are the load ratings of the RHP 7008CTSUMP4?

Dynamic load rating 20,600 N and static load rating 15,900 N (RHP/NSK catalogue C859).

What is the limiting speed of the RHP 7008CTSUMP4?

21,000 rpm on grease and 34,000 rpm on oil/air.

What do SU and M mean in 7008CTSUMP4?

SU is single universal face control, so any two of the same designation combine as a matched pair; M is medium preload, 290 N axial when paired.