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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Super-precision angular contact ball bearing pair, 90x140x24 mm, 15° contact angle, phenolic outer-ring-guided cage, medium preload, ABEC 7 / P4.
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$590.59
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| MFR / Brand | NSK |
|---|---|
| MPN | 7018CTRDUMP4Y |
| GTIN | 029176587498 |
| Model | 7018-CTR-DUM-P4Y |
| Bearing Type | Angular Contact Ball Bearing |
| ID | 90 mm |
| OD | 140 mm |
| Width | 24 mm |
| Material | Bearing Steel |
|---|---|
| Base Number | 7018C |
| Common Misspellings | 7018CTRDUMP4Y; 7018CTRDUM4PY; 7O18CTRDUMP4Y; 7018CTRDUMPY4; 7018 CTR DUM P4Y; NSK 7018 CTRDUMP4Y |
| Application Types | Machine tool spindles; milling and turning centres; grinding spindles; high-speed motor spindles; precision rotary tables; industrial automation and motion control |
| Overall Width | 24 mm |
| Mpn Variants | 7018CTRDUMP4Y; 7018C TR DUM P4Y; 7018-CTR-DUM-P4Y; 7018 C TR DUM P4Y; 7018CTRDUMP4 |
| Precision Class | ABEC 7 / P4 |
| Additional Attributes | Effective load centre a: 27.4 mm; permissible axial load Pa: 44.5 kN; da min: 99 mm; Da max: 131 mm; Db max: 134 mm; ra max: 1.5 mm; rb max: 0.8 mm; r min: 1.5 mm; r1 min: 1 mm; recommended grease quantity: 6.2 g per bearing; cage options catalogued: TYN/TYNX polyamide ball-guided, TR/T/TX/TA phenolic outer-ring guided, TSR PPS, MY brass; accuracy grades catalogued: P5, P4, P4Y, P3; preload classes catalogued: EL, L, M, H, axial rigidity 87-241 N/micron |
| Cage Type | Outer-ring guided |
| Dynamic Load Rating | 90,500 N per bearing |
| Static Load Rating | 69,000 N per bearing |
| Series | 70 Series |
| Rolling Elements | Ball |
| Item Weight | 1.16 kg (2.56 lb) per bearing |
| Cage Material | Phenolic |
| Number Of Rows | Single Row |
| Bore Type | Straight |
| Limiting Speed | 10,000 rpm grease; 15,300 rpm oil |
| Lubricant | Grease or oil / oil-air |
| Harmonization Code | 8482.10.5028 |
| Contact Angle | 15° |
| Preload | Medium (M) |
| Mounting Arrangement | Duplex universal pair (DU) |
| Bearing Material | Bearing Steel |
| Cross Reference 1 | RHP 7018CTDUMP4 |
|---|---|
| Cross Reference 2 | Fafnir 2MM9118WI-DUM |
| Cross Reference 3 | SKF 7018 CD/P4A – single, preload set not stated |
| Cross Reference 4 | FAG B7018-C-T-P4S – single, not a pair |
| Cross Reference 5 | Koyo 7018C – single, precision class not stated |
| Cross Reference 6 | NTN 7018CG/GNP4 – single, not a pair |
| Cross Reference 7 | GMN S 6018 C – single, not a pair |
| Cross Reference 8 | NSK 7018CTYNDUMP4 – polyamide cage, not phenolic |
| Cross Reference 9 | NSK 7018CTRSUMP4Y – single, not a pair |
NSK 7018CTRDUMP4Y is a universally ground pair of single-row super-precision angular contact ball bearings from the 70 series. Bore Diameter: 90 mm. Outside Diameter: 140 mm. Overall Width: 24 mm. Contact Angle: 15°. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: Single Row. Bearing Material: Bearing Steel. Series: 70 Series. Base Number: 7018C.
Dynamic Load Rating: 90,500 N per bearing. Static Load Rating: 69,000 N per bearing. Limiting Speed: 10,000 rpm grease; 15,300 rpm oil. Item Weight: 1.16 kg (2.56 lb) per bearing. Load ratings and mass are quoted per bearing, not for the set.
7018 — 70 series super-precision angular contact ball bearing on a 90 mm bore.
C — 15° contact angle.
TR — phenolic resin cage, outer-ring guided.
DU — duplex universal pair, ground so the two bearings mount back-to-back, face-to-face or in tandem.
M — medium preload class.
P4Y — NSK precision grade equating to ABEC 7 / P4.
The 15° contact angle biases capacity toward radial load and lifts the speed ceiling relative to steeper 25° and 30° angles, which is why the C angle dominates machine-tool spindle work. Precision Class: ABEC 7 / P4. Preload: Medium (M). Cage Material: Phenolic. Cage Type: Outer-ring guided. Lubricant: Grease or oil / oil-air.
Universal grinding means the offset ground into each ring face sets the preload automatically once the pair is clamped, without shims or spacers. Medium preload raises axial and radial rigidity over the light class in exchange for additional heat generation.
Effective load centre a: 27.4 mm. Permissible axial load Pa: 44.5 kN. Minimum shaft abutment diameter da: 99 mm. Maximum housing abutment diameter Da: 131 mm. Maximum housing abutment diameter Db: 134 mm. Maximum shaft fillet radius ra: 1.5 mm. Maximum housing fillet radius rb: 0.8 mm. Minimum chamfer dimension r: 1.5 mm. Minimum chamfer dimension r1: 1 mm. Recommended grease quantity: 6.2 g per bearing.
Unit Quantity: 2 Pcs. Mounting Arrangement: Duplex universal pair (DU).
Medium-preload 15° duplex pairs of this size: RHP 7018CTDUMP4 and Fafnir 2MM9118WI-DUM. NSK 7018CTYNDUMP4 is the same pair with a polyamide ball-guided cage. SKF 7018 CD/P4A, FAG B7018-C-T-P4S, Koyo 7018C, NTN 7018CG/GNP4, GMN S 6018 C and NSK 7018CTRSUMP4Y are 15° bearings of this size sold as singles.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
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