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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NSK super-precision angular contact bearing, 40 x 80 x 18 mm, 25° contact angle, polyamide cage, duplex light-preload pair for high-speed spindles.
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$114.72
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Here are some other options that might fit your project — cross-referenced equivalents and similar parts we have in stock and ready to ship. Need help choosing? Call 585-295-7880.
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Super-Precision Angular Contact Ball Bearing – 40 mm Bore, 80 mm OD, 18 mm Width, 25°, ABEC 7$103.17| MFR / Brand | NSK |
|---|---|
| MPN | 7208A5TYDUL |
| Model | 7208 A5 TY DUL / 3MM208 WI CR DUL / B7208E |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 80 mm |
| Width | 18 mm |
| Material | Bearing Steel |
|---|---|
| Series | 7200 |
| Preload | Light |
| Base Number | 7208A5 |
| Industry Terms | Spindle bearing; machine tool bearing; super precision angular contact; duplex pair; 25 degree angular contact; universally ground pair |
| Common Misspellings | 7208 A5TY DUL; 7208A5 TYDVL; 7208AS TYDUL; NSK 7208 A5 DUL |
| Application Types | High-speed machine tool spindles; milling and machining centre spindles; precision headstocks |
| Bore Shaft Size | 40 mm |
| Mpn Variants | 7208A5TYDUL; 7208-A5-TY-DUL; 7208 A5 TY DUL; 7208A5TYNDUL; 7208A5DUL; 7208A5 |
| Manufacturer Status | NSK, current range |
| Rolling Elements | Ball |
| Number Of Rows | Single row per bearing |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50.68 |
| Part Number | 7208A5TYDUL |
NSK 7208A5TYDUL super-precision angular contact ball bearing in the 72-dimension series. 40 mm bore, 80 mm outside diameter, 18 mm width. Contact Angle: 25 degrees. Cage Material: Polyamide, ball-guided, moulded, rated to approximately 120°C. Ground as a duplex set at light preload. A machine tool spindle bearing.
7208 is the 72-dimension series angular contact envelope, 40 x 80 x 18 mm. A5 is NSK’s code for a 25 degree contact angle, where C is 15 degrees, A is 30 degrees and B is 40 degrees. TY denotes the moulded polyamide, ball-guided cage. DUL is duplex universally ground at light preload: the ground faces produce the specified preload when the set is clamped together, in whichever arrangement is chosen. The cross-designation 7208E on this part corroborates the angle independently, since E denotes 25 degrees in the Schaeffler and ISO world-number schemes.
25 degrees is the middle spindle angle, giving substantially more axial capacity and stiffness than a 15 degree bearing without the speed penalty of a 30 or 40 degree bearing. Light preload gives the lowest friction and heat and the highest speed capability of the preload classes, with the least axial stiffness. Dynamic Load Rating: 36.5 kN. Static Load Rating: 24.1 kN. Limiting Speed: 19,000 rpm. NSK’s ratings for 7208A5SN24 designations describe ceramic-ball hybrid bearings and do not apply to this steel-ball part.
DUL designates a matched pair ground as a set. Bearings from a common original set produce the specified preload when clamped together.
Angle-equivalent designations at 25 degrees in this envelope: 7208E in ISO world-number style, B7208-E-T-P4S-DUL in Schaeffler format, 7208AC in SKF format, and the 3MM208WI family in Fafnir/Timken format. 7208C is 15 degrees and 7208A is 30 degrees; both share this envelope and are not substitutes.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
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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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