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2 in stock
Matched duplex pair, super-precision angular contact ball bearings, 50 x 80 x 16 mm each, 25° contact angle, phenolic cage, ABEC 7/9, medium preload.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9110WIDUM |
| GTIN | 087796072497 |
| Model | 7010A5 T DUM P4 / 3 MM 9110 WI CR DUM / 7010A / 7010AC / B7010E |
| Bearing Type | Angular Contact Ball Bearing, Open |
| ID | 50 mm |
| OD | 80 mm (3.150 in) |
| Width | 16 mm (0.630 in) |
| Condition | New – Open box |
|---|---|
| Base Number | 3MM9110WI |
| Industry Terms | Super precision spindle bearing; machine tool spindle bearing; matched duplex pair; P4S angular contact bearing |
| Total Width | 32 mm (duplex pair) |
| Condition Note | Made In USA, New Old Stock |
| Bore Shaft Size | 50 mm |
| Mpn Variants | 3MM-9110-WI-DUM; 3MM9110WI DUM; 3MM9110WICRDUM; 3 MM 9110 WI CR DUM; 7010E-T-P4S-DUM; 7010A5-T-DUM-P4; 7010A; 7010AC; B7010E |
| Compatible With Replaces | Timken world part number 7010E-T-P4S-DUM |
| Arrangement Configuration | Matched duplex pair, universally faced |
| Precision Class | ABEC 7/9 (ISO P4S) |
| Dynamic Load Rating C1 | 23,900 N (5,380 lbf) per row, ISO C1 |
| Additional Attributes | Rows Per Set Duplex; Shaft Backing Shoulder Diameter 56.1 mm (2.210 in); Housing Backing Shoulder Diameter 74.2 mm (2.920 in); Max Shaft Fillet Radius 1 mm (0.039 in); Outer Ring To-Clear Radius 1 mm (0.039 in) |
| Cage Type | Outer-ring land-riding, machined (CR) |
| Dynamic Load Rating | 26,300 N (5,910 lbf) set |
| Static Load Rating | 19,700 N (4,430 lbf) |
| Precision Rating | ABEC 7/9 / P4S |
| Series | 9100WI |
| Rolling Elements | Balls (steel) |
| Cage Material | Machined laminated phenolic |
| Limiting Speed | 29,400 rpm oil; 16,200 rpm grease |
| Number Of Rows | 1 per bearing |
| Bore Type | Straight |
| Internal Clearance | N/A - preloaded set |
| Lubricant | Grease or oil |
| Harmonization Code | 8482.10.50 |
| Contact Angle | 25° |
| Preload | Medium |
| Mounting Arrangement | Universally faced duplex, for DB, DF or DT mounting |
| Design Units | Metric |
| Bearing Material | High Carbon Chrome Steel |
| Part Number | 3MM9110WI-DUM |
| Material | High Carbon Chrome Steel |
| Cross Reference 1 | NSK 7010A5TRDUMP4 |
|---|---|
| Cross Reference 2 | FAG B7010-E-T-P4S-UM |
| Cross Reference 3 | SKF 7010 ACD/P4ADGB |
| Cross Reference 4 | RHP 7010ETDUMP4 |
Fafnir 3MM9110WI-DUM super-precision angular contact ball bearing set, ISO 7010 envelope, 50 mm bore x 80 mm outside diameter x 16 mm width per bearing. Bore: 50 mm. Outside Diameter: 80 mm (3.150 in). Overall Width: 16 mm (0.630 in). Total Width: 32 mm across the pair. Bore Type: Straight. Number Of Rows: 1 per bearing. Rolling Elements: Steel balls. Closure Type: Open. Contact Angle: 25°. Precision Class: ABEC 7/9 (ISO P4S). Preload: Medium. Cage Material: Machined laminated phenolic. Cage Type: Outer-ring land-riding, machined. Design Units: Metric. Material: High-carbon chrome steel. GTIN: 087796072497. Country of Origin: United States.
3MM: 25° contact angle in Timken’s Fafnir super-precision scheme, and the MM prefix carries ISO tolerance class P4S, equal to ABEC 7/9. 9110: the 9100WI light series, which maps to ISO 7010. WI: super-precision spindle execution. DU: universally faced duplex pair. M: medium preload. Timken’s own world part number for this set is 7010E-T-P4S-DUM. Searchable variants: 3MM-9110-WI-DUM, 3MM9110WI DUM, 3MM9110WICRDUM, 3 MM 9110 WI CR DUM, 7010A5-T-DUM-P4, B7010E.
Dynamic Radial Load Rating, set: 26,300 N (5,910 lbf). Dynamic Radial Load Rating per row, ISO C1: 23,900 N (5,380 lbf). Static Radial Load Rating: 19,700 N (4,430 lbf). Limiting Speed, grease lubrication: 16,200 rpm. Limiting Speed, oil lubrication: 29,400 rpm. A 25° contact angle carries more thrust and gives higher axial rigidity than a 15° execution of the same envelope, at the cost of top speed. Medium preload sets a stiffer axial position than light, which suits work where the thrust direction reverses. The machined phenolic cage rides on the outer-ring land, so cage guidance comes from the stationary ring and stays stable as speed rises. Lubricant: grease or oil.
Unit Quantity: 2 Pcs. Rows Per Set: Duplex. A matched pair with universally ground faces, so the two bearings mount back-to-back, face-to-face or in tandem and reach medium preload when clamped. Internal Clearance: N/A — face grinding sets the axial position on a universally faced preloaded set, in place of a radial clearance class.
Shaft Backing Shoulder Diameter: 56.1 mm (2.210 in). Housing Backing Shoulder Diameter: 74.2 mm (2.920 in). Maximum Shaft Fillet Radius: 1 mm (0.039 in). Outer Ring To-Clear Radius: 1 mm (0.039 in).
Same-specification equivalents: Timken world part number 7010E-T-P4S-DUM, NSK 7010A5TRDUMP4, FAG B7010-E-T-P4S-UM, SKF 7010 ACD/P4ADGB, RHP 7010ETDUMP4. A 2MM9110WI set shares the 50 x 80 x 16 mm envelope at a 15° contact angle, which is a related size rather than a substitution.
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