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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 bearings, 20 x 42 x 12 mm, 15° contact angle, phenolic cage, universal light preload. 2 Pcs.
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$127.38
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| MFR / Brand | NSK |
|---|---|
| MPN | 7004CTDULPA7 |
| Model | 7004 C T DUL PA7 / 2MM9104 WI CR DUL |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 20 mm |
| OD | 42 mm |
| Width | 12 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7000 |
| Preload | Light (L) |
| Base Number | 7004 |
| Common Misspellings | NKS 7004CTDULPA7, 70O4CTDUL, 7004CTDULPA-7, 7004-CT-DUL, 7004CTOULPA7, 7OO4C, NSK 7004 CT DUL |
| Application Types | High-speed machine tool spindles, grinding spindles, milling and drilling heads, precision boring spindles, router and engraving spindles, high-speed motorised spindles |
| Mpn Variants | 7004CTDULPA7, 7004-C-T-DUL-PA7, 7004C T DUL PA7, 7004CTDUL, 7004C, 7004 C T DUL |
| Arrangement Configuration | Two universally ground singles, light preload. Load ratings and weight are per bearing. |
| Additional Attributes | Effective load centre a 10.1 mm. Preload force Pa 4.80 kN. Grease quantity 0.41 g per bearing. Shaft abutment da min 25 mm. Housing abutment Da max 37 mm, Db max 39.5 mm. Fillet radius ra max 0.6 mm, rb max 0.3 mm. Chamfer r min 0.6 mm, r1 min 0.3 mm. NSK cage options for this designation: TYN and TYNX polyamide ball-guided, TR/T/TX/TA phenolic outer-ring guided, TSR PPS, MY brass. Accuracy grades P5, P4, P4Y, P3. Preload classes EL, L, M, H. |
| Closure Type | Open |
| Cage Type | Outer-ring guided |
| Dynamic Load Rating | 14,000 N |
| Static Load Rating | 6,550 N |
| Rolling Elements | Ball |
| Item Weight | 0.067 kg (0.148 lb) per bearing |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Limiting Speed | 37,100 rpm grease; 56,500 rpm oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Mounting Arrangement | Universal – pairs back-to-back, face-to-face or tandem |
| Design Units | Metric |
| Bearing Material | Bearing steel |
| Cross Reference 1 | SKF 7004 CD/P4A – same 20x42x12 mm envelope at 15°, ratings differ by maker |
|---|---|
| Cross Reference 2 | FAG B7004-C-T-P4S – same envelope at 15°, ratings differ by maker |
| Cross Reference 3 | Fafnir 2MM9104WI – same envelope at 15°, ratings differ by maker |
| Cross Reference 4 | RHP 7004 CT – same envelope at 15°, ratings differ by maker |
| Cross Reference 6 | NSK 7004CTRDUL – same bearing with the TR phenolic cage |
| Cross Reference 7 | NSK 7004CTYNDUL – same bearing with the polyamide ball-guided cage |
| Cross Reference 8 | NSK 7004A5 – same envelope at 25°, higher thrust and lower speed |
NSK 7004C super precision angular contact ball bearings, universally ground for light preload, supplied as a pair. Bore Diameter: 20 mm (0.7874 in). Outside Diameter: 42 mm (1.6535 in). Overall Width: 12 mm (0.4724 in). Contact Angle: 15°. Number Of Rows: 1 per bearing. Rolling Elements: Ball. Cage Material: Phenolic. Cage Type: Outer-ring guided. Preload: Light (L).
70 — single row angular contact ball bearing, ISO dimension series 10, the light spindle section.
04 — bore code, 04 x 5 = 20 mm.
C — 15° contact angle.
T — phenolic resin cage, outer-ring guided.
DUL — duplex universal, light preload. Universally ground faces mean any two bearings of this designation clamp solid to the specified preload, in back-to-back, face-to-face or tandem.
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. Item Weight: 0.067 kg (0.148 lb) per bearing. Effective load centre a: 10.1 mm. Preload force Pa: 4.80 kN.
A 15° contact angle is the high-speed end of the super-precision range: less axial capacity than a 25° bearing, and a far higher speed ceiling. At 37,100 rpm on grease this is a spindle bearing, not a general machine bearing.
An outer-ring guided phenolic cage is light, runs against a lubricant film on the outer ring land rather than on the balls, and holds its form at spindle speed. It is the reason this execution reaches the speeds above.
Light preload removes internal clearance while keeping running torque and heat generation low, which is what a high-speed spindle needs.
Bore Type: Straight. Shaft abutment diameter da min: 25 mm. Housing abutment diameter Da max: 37 mm. Db max: 39.5 mm. Fillet radius ra max: 0.6 mm, rb max: 0.3 mm. Chamfer r min: 0.6 mm, r1 min: 0.3 mm. Effective load centre a: 10.1 mm. Grease quantity: 0.41 g per bearing.
Unit Quantity: 2 Pcs. Two universally ground singles. Load ratings and weight above are per bearing.
Same 20 x 42 x 12 mm envelope at 15° super precision: SKF 7004 CD/P4A, FAG B7004-C-T-P4S, Fafnir 2MM9104WI, RHP 7004 CT, GMN S6004C. Each maker’s cage, preload scheme and published ratings differ.
NSK executions on this designation: cage options TYN and TYNX polyamide ball-guided, TR, T, TX and TA phenolic outer-ring guided, TSR in PPS, MY in brass; accuracy grades P5, P4, P4Y and P3; preload classes EL, L, M and H. 7004A5 is the 25° bearing on the same envelope.
Common spellings: 7004C, 7004-C-T-DUL-PA7, 7004CTDUL, 7004 C T DUL, 7004CT.
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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.
Our team can locate, cross-reference, and source all parts.
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