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NSK7004CTYDULPA7Super Precision Angular Contact Ball Bearing — 20 mm ID, 42 mm OD, 12 mm Width, 15° Contact Angle, Universally Ground Duplex Pair, Light Preload, Ball-Guided Cage

Condition: New

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1 in stock

Super precision angular contact ball bearing, 20x42x12 mm, 15 degree contact angle, universally ground duplex pair at light preload, 14,000 N dynamic.

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$119.73

1 in stock

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Specifications

Key Specifications

MFR / BrandNSK
MPN7004CTYDULPA7
Model7004 C TY DUL PA7 / 2MM9104 WI CR DUL
Bearing TypeAngular Contact Ball Bearing, Open
ID20 mm
OD42 mm
Width12 mm

Technical Specifications

MaterialBearing Steel
SeriesNSK 7000C Super Precision
PreloadLight (L)
Base Number7004C
Industry TermsSuper precision bearing; spindle bearing; precision angular contact; matched pair; duplex set; 15 degree ACBB
Common Misspellings7004 CTY DUL PA7; 7004CTYDULP A7; 7004CTY-DULPA7; NSK7004C; 7004 C TY DUL PA 7
Application TypesMachine tool spindles; grinding spindles; high-speed motor spindles; precision rotary tables; test and metrology equipment
Overall Width12 mm
Mpn Variants7004CTYDULPA7; 7004C TY DUL PA7; 7004-C-TY-DUL-PA7; 7004CTYDUL; 7004C/DUL
Additional AttributesEffective load centre a: 10.1 mm; Permissible axial load Pa: 4.80 kN; da min 25 mm; Da max 37 mm; Db max 39.5 mm; r min 0.6 mm; r1 min 0.3 mm; ra max 0.6 mm; rb max 0.3 mm; recommended grease quantity 0.41 g per bearing; accuracy grades offered in this size: P5, P4, P4Y, P3; cage options offered: TY, TYN, TR, TSR, MY; preload classes offered: EL, L, M, H
Cage TypeBall-guided
Dynamic Load Rating14,000 N
Static Load Rating6,550 N
Rolling ElementsBall
Item Weight0.067 kg (0.148 lb) per bearing
Number Of Rows1
Bore TypeStraight
Snap Ring IncludedWithout Snap Ring
Limiting Speed37,100 rpm grease; 56,500 rpm oil
LubricantGrease or oil/oil-air
Harmonization Code8482.10.50
Contact Angle15°
Mounting ArrangementDuplex universal (DU)
Bearing MaterialSteel

Cross-References

Cross Reference 1SKF 7004 CD/P4A
Cross Reference 2FAG B7004-C-T-P4S
Cross Reference 3Timken/Fafnir 2MM9104WI
Cross Reference 4Barden 104HC
Cross Reference 5RHP 7004CT
Cross Reference 6Koyo 7004C
Cross Reference 7NTN 7004C
Cross Reference 8NACHI 7004C
Cross Reference 9SKF 7004 ACD/P4A — same envelope at 25°, related not equivalent
Seller Part Number: B-AB1B5#I8IABI

Product Description

What this part is

NSK 7004C TY DUL PA7 is a super-precision single-row angular contact ball bearing supplied as a universally ground duplex pair. Bore Diameter: 20 mm. Outside Diameter: 42 mm. Overall Width: 12 mm. Contact Angle: 15°. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Bearing Material: Steel. Series: NSK 7000C super precision. Base Number: 7004C.

Decoding the designation

7004 — 70 series super-precision angular contact ball bearing in the 04 bore size, giving a 20 mm bore.

C — 15° contact angle.

TY — ball-guided cage.

DU — duplex universal, a matched pair that mates back-to-back, face-to-face or in tandem.

L — light preload class.

PA7 — NSK execution suffix.

What these specs mean in practice

Dynamic Load Rating: 14,000 N (3,147 lbf) per bearing. Static Load Rating: 6,550 N (1,473 lbf) per bearing. Limiting Speed: 37,100 rpm grease; 56,500 rpm oil. Permissible axial load Pa: 4.80 kN per bearing. Item Weight: 0.067 kg (0.148 lb) per bearing. Lubricant: grease or oil/oil-air, at a recommended grease quantity of 0.41 g per bearing.

Mounting data

Effective load centre a: 10.1 mm. Shaft abutment diameter da min: 25 mm. Housing abutment diameter Da max: 37 mm. Housing abutment diameter Db max: 39.5 mm. Chamfer r min: 0.6 mm. Chamfer r1 min: 0.3 mm. Shaft fillet ra max: 0.6 mm. Housing fillet rb max: 0.3 mm.

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: duplex universal (DU). Preload: Light (L). Load ratings and mass are stated per bearing, not for the set.

Interchange guidance

Equivalents at the same 20 × 42 × 12 mm envelope and 15° contact angle include SKF 7004 CD/P4A, FAG B7004-C-T-P4S, Timken/Fafnir 2MM9104WI, Barden 104HC, RHP 7004CT, Koyo 7004C, NTN 7004C and NACHI 7004C. SKF 7004 ACD/P4A shares the same envelope at 25° and is related, not equivalent.

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