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Timing Belt Pulleys and V-Belt Sheaves: Matching Belt Drive Components Correctly
Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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1 in stock
Super-precision angular contact ball bearing pair, 90x140x24 mm, 15 degree contact angle, ball-guided cage, medium preload, duplex universal ground set.
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$590.59
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| MFR / Brand | NSK |
|---|---|
| MPN | 7018CTYDUMPA7 |
| GTIN | 029176018541 |
| Model | 7018-CTY-DUM-PA7 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 90 mm |
| OD | 140 mm |
| Width | 24 mm |
| Material | Chrome Steel |
|---|---|
| Series | 70 Series |
| Lubricant | Grease or oil / oil-air |
| Preload | Medium (M) |
| Base Number | 7018C |
| Industry Terms | Super precision bearing; spindle bearing; angular contact ball bearing; matched pair; duplex set; 15 degree contact angle; universally ground; ball-guided cage; machine tool bearing |
| Common Misspellings | 7018CTYDUMPA7; 7018CTYDMPA7; 7O18CTYDUMPA7; 7018CTYDUMP A7; 7018 CTY DUM PA7; NSK 7018 CTYDUMPA7 |
| 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 | 7018CTYDUMPA7; 7018C TY DUM PA7; 7018-CTY-DUM-PA7; 7018 C TY DUM PA7; 7018CTYDMPA7 (as previously catalogued, missing the U) |
| 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 for this size: 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 | Ball-guided |
| Dynamic Load Rating | 90,500 N per bearing |
| Static Load Rating | 69,000 N per bearing |
| Rolling Elements | Ball |
| Item Weight | 1.16 kg (2.56 lb) per bearing |
| Number Of Rows | Single Row |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 10,000 rpm grease; 15,300 rpm oil |
| Harmonization Code | 8482.10.5028 |
| Contact Angle | 15° |
| Mounting Arrangement | Duplex universal pair (DU) |
| Bearing Material | Bearing Steel |
| Closure Type | Open |
| Cross Reference 1 | NSK 7018CTYNDUMP4 – polyamide ball-guided cage |
|---|---|
| Cross Reference 2 | NSK 7018CTRDUMP4Y – phenolic outer-ring cage |
| Cross Reference 3 | RHP 7018CTDUMP4 – phenolic outer-ring cage |
| Cross Reference 4 | Fafnir 2MM9118WI-DUM – phenolic outer-ring cage |
| Cross Reference 5 | SKF 7018 CD/P4A – single, preload set not stated |
| Cross Reference 6 | FAG B7018-C-T-P4S – single, not a pair |
| Cross Reference 7 | Koyo 7018C – single, precision class not stated |
| Cross Reference 8 | NTN 7018CG/GNP4 – single, not a pair |
| Cross Reference 9 | GMN S 6018 C – single, not a pair |
NSK 7018CTYDUMPA7 universally ground pair of single-row super-precision angular contact ball bearings, 70 series. Bore 90 mm, outside diameter 140 mm, width 24 mm per bearing, 15° contact angle, ball-guided cage, medium preload, open. Unit Quantity: 2 Pcs.
7018 — 70 series super-precision angular contact ball bearing on a 90 mm bore.
C — 15° contact angle.
TY — ball-guided cage.
DU — duplex universal pair, ground so the two bearings mount back-to-back, face-to-face or in tandem.
M — medium preload class.
Bore Diameter: 90 mm (3.5433 in). Outside Diameter: 140 mm (5.5118 in). Overall Width: 24 mm (0.9449 in) per bearing. Contact Angle: 15°. Preload: Medium (M). Cage Type: Ball-guided. Rolling Elements: Ball. Number Of Rows: Single Row. Bore Type: Straight. Closure Type: Open. Bearing Material: Bearing Steel. Series: 70 Series. Base Number: 7018C. Mounting Arrangement: Duplex universal pair (DU). Dynamic Load Rating: 90,500 N (20,346 lbf) per bearing. Static Load Rating: 69,000 N (15,513 lbf) per bearing. Limiting Speed: 10,000 rpm grease; 15,300 rpm oil. Lubricant: Grease or oil / oil-air. Item Weight: 1.16 kg (2.56 lb) per bearing.
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.
Cross-references: NSK 7018CTYNDUMP4, a medium-preload 15° duplex pair with a polyamide ball-guided cage; NSK 7018CTRDUMP4Y, RHP 7018CTDUMP4 and Fafnir 2MM9118WI-DUM, the same pair with a phenolic outer-ring-guided cage. SKF 7018 CD/P4A, FAG B7018-C-T-P4S, Koyo 7018C, NTN 7018CG/GNP4 and GMN S 6018 C are 15° single bearings of this size. Searchable forms of the number: 7018CTYDUMPA7, 7018C TY DUM PA7, 7018-CTY-DUM-PA7, 7018 C TY DUM PA7 and 7018CTYDMPA7.
The C in the designation is a 15° contact angle and the M is medium preload.
TY is a ball-guided cage.
Per bearing: dynamic load rating 90,500 N and static load rating 69,000 N. Limiting speed is 10,000 rpm on grease and 15,300 rpm on oil.
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Our team can locate, cross-reference, and source all parts.
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