NSK
Angular Contact Ball Bearing
詢價
預計配送日期：2026.06.20（韓國庫存）
顯示價格為 EX-WORKS（國貿條規 2020）韓國首爾。運費、關稅及保險由買方承擔。
NSK 7938A5SULP4 Angular Contact Ball Bearing supports combined radial and one-direction axial load through a defined contact angle. It is a high-speed, high-precision choice for pumps, compressors, machine tools, and spindle-related positions where axial rigidity and rotational accuracy matter.
The inner and outer ring raceways are offset to create a contact angle. Single-row, double-row, or matched arrangements can be used to meet axial load direction, preload, and rigidity requirements.
Select by contact angle, arrangement, preload, precision class, axial load direction, and operating speed.
| 符號 | 數值 | 說明 |
|---|---|---|
| d | 190 mm | Bore diameter (inner) |
| D | 260 mm | Outside diameter (outer) |
| B | 33 mm | 寬度 |
| α | 25° | Contact angle (A5 designation) |
| Cr | 139 kN | Basic dynamic load rating |
| C0r | 182 kN | Basic static load rating |
| ngrease | 4,500 rpm | Limit speed with grease lubrication |
| noil | 6,700 rpm | Limit speed with oil lubrication |
| ≈m | 5.1 kg | Weight (approx.) |
| 項目 | 代碼 | 說明 |
|---|---|---|
| Type | Universal Combination Angular Contact Bearing | Single bearing, universally matchable (DB/DF/DT/QBC) |
| Model No. | 7938A5SULP4 | Standard NSK Japan part number (no TR/TYN suffix → pressed steel cage) |
| 密封 | Open type | No shield, no seal |
| 預緊 | L | Light preload — high-speed precision spindle applications |
| 保持架 | Pressed steel | Standard NSK Japan steel cage (TR = phenolic / TYN = polyamide are RHP-UK variants) |
| Precision | P4 | ISO Class 4 ≈ JIS 4 ≈ ABEC-7 |
| 代碼 | 說明 |
|---|---|
| NSK Ltd. | Original equipment manufacturer |
| Japan | NSK Fujisawa precision plant |
| Direct Import from Japan | |
| 4 | ≈ ISO Class 4 / DIN P4 / ABEC-7 |
| Angular Contact Ball Bearing | Single row, defined contact angle |
| Flat | No snap ring, no flange |
| Radial | Plus axial in one direction (per angular contact geometry) |
| High Carbon Steel | Rings/raceways — SUJ2 high-carbon chromium bearing steel |
| High Carbon Chromium Bearing Steel | Steel balls (SUJ2) |
| 8417133 | External catalog reference |
The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:
NSK7938A5SULP4NSK 7938A5SULP4詢價
預計配送日期：2026.06.20（韓國庫存）
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