Timken vs. SKF Bearings: The Difference Between Tier-1 Bearing Brands
When sourcing a replacement bearing, you will often find both Timken and SKF options for
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Super-precision 15° angular contact spindle bearing, 90x140x24 mm, ABEC-7 / ISO P4, heavy preload, universally matchable (DUH) — RHP, New Old Stock.
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| MFR / Brand | RHP |
|---|---|
| MPN | 7018CTDUHP4 |
| Model | 7018C T DUH P4 / 2MM9118WI CR DUH / B7018X2TDUHEP7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 90 mm |
| OD | 140 mm |
| Width | 24 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7000 |
| Condition | New – Open box |
| Preload | Heavy |
| Condition Note | New Old Stock. Brand origin: England (RHP). NOTE: a prior note said “Made In USA” — RHP super-precision bearings are made in England; verify before stating origin. |
| Min Temp | -40°C |
| Cage Type | Phenolic |
| Dynamic Load Rating | 76 kN |
| Static Load Rating | 85 kN |
| Precision Rating | ABEC 7 / P4 |
| Rolling Elements | Ball |
| Max Temp | 120°C |
| Item Weight | 2.50 lbs |
| Cage Material | Phenolic Resin |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universal |
| Internal Clearance | CN |
| Cross Reference 1 | SKF 7018 CD/P4ADGC |
|---|---|
| Cross Reference 2 | FAG B7018-C-T-P4S-DUH |
| Cross Reference 3 | NSK 7018CTYNDUHP4 |
The RHP 7018CTDUHP4 is a super-precision single-row angular contact ball bearing measuring 90 mm bore x 140 mm OD x 24 mm width, built for machine-tool spindles and other high-speed, high-accuracy rotating applications.
Designation decode: 7018 (angular contact, 90 mm bore) · C (15° contact angle) · T (machined cage) · DUH (universally matchable/ground for duplex mounting, Heavy preload) · P4 (ISO Class 4 / ABEC-7 precision). The 15° contact angle favors high-speed running under combined radial and light axial load, and the DU universal grinding lets a pair be arranged back-to-back (DB), face-to-face (DF), or in tandem (DT) without shims.
Type: Super-precision single-row angular contact ball bearingBore (ID): 90 mm (3.5433 in)Outside diameter (OD): 140 mm (5.5118 in)Width: 24 mm (0.9449 in)Contact angle: 15° (C)Precision grade: ABEC-7 / ISO P4Preload: Heavy (H)Arrangement: Universally matchable / ground (DU) — arrange DB, DF or DTCage: Machined (T)Bore type: Straight (cylindrical)Weight: 1.18 kg (2.60 lb)Brand / origin: RHP (NSK), made in EnglandCross-references: NSK 7018C·T·DUH·P4; comparable envelope to FAG HS7018-C-T-P4S and SKF 7018 CD/P4A (verify contact angle and preload when interchanging). For reference only, a standard (non-super-precision) 7018 at 15° carries approx. 65 kN dynamic / 63.5 kN static — super-precision spindle ratings differ and are not published for this exact variant. Item is New Old Stock.
Also searched as: 7018C, 7018-C-T-DUH-P4, 7018 CTDUH P4, RHP super precision spindle bearing, ABEC 7 angular contact, universally matchable bearing.
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