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1 in stock
Super-precision angular contact ball bearing, 40 x 62 x 12 mm, 15° contact angle, phenolic cage, ABEC 7/9 tolerance, 44,800 rpm on oil.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 2MM9308WISUL |
| GTIN | 087796325456 |
| Model | 2MM 9308 WI SUL / 71908 C T SUL P4S |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 40 mm |
| OD | 62 mm |
| Width | 12mm |
| Series | 9300 |
|---|---|
| Condition | New – Open box |
| Lubricant | Oil |
| Preload | Light |
| Material | Bearing Steel |
| Base Number | 2MM9308WI |
| Condition Note | Made In USA, New Old Stock |
| Overall Width | 12 mm |
| Mpn Variants | 2MM9308WISUL; 2MM-9308-WI-SUL; 2 MM 9308 WI CR SUL; 2MM9308WICRSUL; 7908C; 71908C |
| Precision Class | ABEC 7/9 / P4S |
| Dynamic Load Rating | 16,000 N |
| Static Load Rating | 11,700 N |
| Precision Rating | ABEC 7/9 / P4S |
| Rolling Elements | Ball |
| Item Weight | 0.110 kg (0.25 lb) |
| Cage Material | Phenolic |
| Limiting Speed | 22,400 rpm grease; 44,800 rpm oil |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 15° |
| Cross Reference 1 | FAG B71908-C-T-P4S-UL |
|---|---|
| Cross Reference 2 | SKF 71908 CD/P4A |
| Cross Reference 3 | NSK 7908CTRSULP4 |
| Cross Reference 4 | NTN 7908UCG/GNP4 |
| Cross Reference 5 | RHP 7908CTSULP4 |
| Cross Reference 6 | Koyo 7908C P4 |
| Cross Reference 7 | SNFA SEA 40 7CE1 |
| Cross Reference 8 | 71908C (related size, standard tolerance) |
Fafnir 2MM9308WICRSUL, a single super-precision angular contact ball bearing ground for universal matching. Bore Diameter: 40 mm. Outside Diameter: 62 mm. Overall Width: 12 mm. Contact Angle: 15°. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Cage Material: Phenolic. Precision Class: ABEC 7/9 / P4S. Preload: Light. Series: 9300WI. Base Number: 2MM9308WI. GTIN: 087796325456.
2MM — Fafnir super-precision spindle range at a 15° contact angle, ground to ABEC 7/9 (P4S) tolerances.
9308 — the 9300 extra-light dimension series, bore code 08, which maps to the ISO 71908 envelope: 40 mm bore, 62 mm outside diameter, 12 mm width. The 9300 series is a separate mapping from the 9100 series, which lands on ISO 70xx.
WI — low shoulder on both rings.
CR — phenolic cage.
SUL — single bearing, universally ground, light preload grade. Two or more can be clamped together in any face orientation and will take up the light preload.
Dynamic Load Rating: 16,000 N. Static Load Rating: 11,700 N. Limiting Speed: 22,400 rpm grease; 44,800 rpm oil. Item Weight: 0.110 kg (0.25 lb). The extra-light 9300 section puts a thin cross-section on a 40 mm shaft, which is what makes the very high speed figure possible. A 15° contact angle favours speed and radial rigidity over thrust capacity.
Shaft Backing Shoulder Diameter: 44.6 mm. Housing Backing Shoulder Diameter: 57.9 mm. Maximum Housing Fillet Radius: 0.6 mm (0.024 in) — the largest housing corner radius the bearing corners will clear.
Unit Quantity: 1 Pc. One single-row bearing, universally ground so it can run alone or be stacked back-to-back, face-to-face or in tandem with siblings of the same grade.
Direct super-precision equivalents on the 71908 envelope at 15°: FAG B71908-C-T-P4S-UL, SKF 71908 CD/P4A, NSK 7908CTRSULP4, NTN 7908UCG/GNP4, RHP 7908CTSULP4 and Koyo 7908C P4. SNFA SEA 40 7CE1 shares the 15° angle on the same section family. A standard-tolerance 71908C shares the envelope and angle only. Searchable variants include 2MM9308WISUL, 2MM-9308-WI-SUL, 2 MM 9308 WI CR SUL, 2MM9308WICRSUL, 7908C and 71908C.
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