Motor Starters vs. Contactors vs. Overload Relays: What Each One Does and Why You Need All Three
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1 in stock
Super-precision angular contact ball bearing, 20 x 37 x 9 mm, 25° contact angle, light preload, ABEC 7, single row, phenolic cage, open, straight bore.
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| MFR / Brand | SNR |
|---|---|
| MPN | 71904HDUJ74 |
| Model | 7904A5/ACD 7904E T DUL P4 / 3MM9304WI CR DUL / 71904 H V DU J74 |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 20 mm |
| OD | 37 mm |
| Width | 9 mm |
| Condition | New |
|---|---|
| Preload | Light |
| Material | Bearing Steel |
| Base Number | 71904 |
| Common Misspellings | 71904 HDU J74; 71904HDU-J74; 71904 H DU J 74 |
| Bore Shaft Size | 20 mm |
| Mpn Variants | 7904A5/ACD; 7904E T DUL P4; 7904-E-T-DUL-P4; 3MM9304WI CR DUL; 71904 H V DU J74; 71904HDUJ74-1/2PR |
| Precision Class | ABEC 7 / P4 (ISO Class 4) |
| Min Temp | -30°C |
| Cage Type | Not specified |
| Dynamic Load Rating | 7.2 kN |
| Static Load Rating | 4.6 kN |
| Precision Rating | ABEC 7 / P4 |
| Series | 719 |
| Rolling Elements | Balls |
| Max Temp | 120°C |
| Item Weight | 0.08 lbs |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Not specified |
| Internal Clearance | N/A |
| Contact Angle | 25° |
| Mounting Arrangement | Not specified |
| Design Units | Metric |
| Bearing Material | Bearing Steel |
| Running Accuracy | P4 |
| Part Number | 71904HDUJ74 |
| Running Accuracy Radial And Axial Runout | P4 |
| Cross Reference 1 | SKF 71904 ACD/P4ADGA |
|---|
SNR 71904HDUJ74 super-precision angular contact ball bearing. Series: 719. Base Number: 71904. Bore: 20 mm. Outside Diameter: 37 mm. Overall Width: 9 mm. Number Of Rows: 1. Rolling Elements: Balls. Bearing Material: Bearing Steel. Closure Type: Open. Bore Type: Straight. Design Units: Metric.
Contact Angle: 25°, given by the SNR H code. Preload: Light, given by J74. Precision Class: ISO Class 4, equivalent to ABEC 7 and P4. Running Accuracy — Radial And Axial Runout: P4. Searchable forms of the number: 71904HDUJ74, 71904 H DU J74, 71904-H-DU-J74, 71904HDUJ74-1/2PR.
Dynamic Load Rating: 7.2 kN. Static Load Rating: 4.6 kN. A 25° contact angle carries more thrust and less speed than a 15° execution on the same envelope, which suits axially loaded spindle and instrument positions. Cage Material: Phenolic — light, quiet and self-lubricating, rated for continuous running. Max Temp: 120°C. Min Temp: -30°C.
Unit Quantity: 1 Pc. The -1/2PR suffix denotes one bearing. Preloaded execution, so the bearing is supplied set rather than clearance-graded.
Cross-Reference 1: SKF 71904 ACD/P4ADGA, the same 20 x 37 x 9 mm envelope at a matching precision class. MPN Variants recorded on this part: 7904A5/ACD, 7904E T DUL P4, 3MM9304WI CR DUL, 71904 H V DU J74, 7904-E-T-DUL-P4. Common Misspellings: 71904 HDU J74, 71904HDU-J74.
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