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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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2 in stock
Fafnir 3MM9140WI super precision angular contact ball bearing, 200 x 310 x 51 mm, 25° contact angle, ABEC 7 / P4, universally ground single bearing.
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$2,755.40
2 in stock
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9140WI |
| Model | 3MM 9140 WI 7040A |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 200 mm |
| OD | 310 mm |
| Width | 51 mm |
| Series | 9100 |
|---|---|
| Base Number | 3MM9140WI |
| Industry Terms | spindle bearing, super precision angular contact, large bore spindle bearing, ABEC 7 bearing, machine tool bearing, boring mill bearing, precision ground bearing |
| Common Misspellings | Fafner, Faffnir, Fafnier, 3MM9104WI, 3MM9140WL, 3MM9140W1, 3MM 9140WL |
| Application Types | Large machine tool spindles, horizontal boring mills, vertical turning centres, heavy rotary and indexing tables, grinding spindles |
| Bore Shaft Size | 200 mm (7.874 in) |
| Mpn Variants | 3MM9140WI, 3MM-9140-WI, 3MM 9140 WI, 3MM9140WICR, 3MM9140WIDUL, 3MM9140WIDUM, 9140WI, MM9140WI |
| Manufacturer Status | Fafnir super precision line now supplied under the Timken brand |
| Precision Class | ABEC 7 / P4 |
| Additional Attributes | Low shoulder both rings (WI); universally ground; Fafnir 91xx block = ISO 70xx envelope; single row; now supplied under Timken brand |
| Rolling Elements | Ball |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Part Number | 3MM9140WI |
| Cross Reference 1 | NSK 7040A5 (25 deg) |
|---|---|
| Cross Reference 2 | FAG B7040-E-T-P4S |
| Cross Reference 3 | SKF 7040 ACD/P4A |
Fafnir 3MM9140WI is a single super precision angular contact ball bearing in the ISO 7040 envelope: 200 mm bore, 310 mm outside diameter, 51 mm width, 25° contact angle. Universally ground single bearing for large machine tool spindles, horizontal boring mills, vertical turning centres and heavy rotary and indexing tables. Unit Quantity: 1 Pc.
3MM — Fafnir super precision series, 25° contact angle.
MM — P4 precision class (ABEC 7).
9140 — Fafnir 91xx block, ISO 7040 envelope, 200 x 310 x 51 mm.
WI — low shoulder on both rings, the universally ground duplex-capable design.
Bore Diameter: 200 mm. Outside Diameter: 310 mm. Overall Width: 51 mm. Contact Angle: 25°. Precision Class: ABEC 7 / P4. Number Of Rows: 1. Rolling Elements: Ball. Closure Type: Open. Bore Type: Straight.
The rings are universally ground, so a single WI bearing runs on its own or pairs with a second bearing of the same designation in back-to-back (DB), face-to-face (DF) or tandem (DT) arrangements, or with two more as a triplex set.
Cross-references: NSK 7040A5 (25°), FAG B7040-E-T-P4S, SKF 7040 ACD/P4A. The 15° sibling 2MM9140WI is a different bearing. Fafnir super precision is now supplied under the Timken brand.
25°. The 3MM prefix denotes the 25° Fafnir super precision series.
200 mm bore, 310 mm outside diameter and 51 mm width, the ISO 7040 envelope.
A single bearing. It is universally ground and can be combined with matching bearings into DB, DF, DT or triplex sets.
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Belt drives may appear simple, consisting of two wheels and a belt for power transfer.
Tapered, cylindrical, and spherical roller bearings all solve the same basic problem, carrying more load
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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