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Super precision single-row angular contact ball bearing, 85 mm bore x 130 mm OD x 22 mm wide, 25° contact angle, ABEC 7/9, light preload, phenolic cage. 1 Pc.
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| MFR / Brand | Fafnir |
|---|---|
| MPN | 3MM9117WIDUL |
| Model | 3MMF9117 WI CR 7017A |
| Bearing Type | Angular Contact Ball Bearing |
| Condition | New – Open box |
|---|---|
| Preload | Light |
| Base Number | 7017 |
| Industry Terms | Spindle bearing, machine tool bearing, super precision angular contact, precision ball bearing |
| Common Misspellings | Fafner, Faffnir, Fafnier, 3MM9117W1, 3MM911 7WI |
| Application Types | Machine tool spindles, grinding spindles, precision gearboxes, high-speed rotating assemblies |
| Condition Note | Made In USA, New Old Stock |
| Bore Shaft Size | 85 mm (3.3465 in) |
| Mpn Variants | 3MM9117WI-SUL, 3MM-9117-WI-SUL, 3MM9117WISUL, 3MM9117WI-CR-SUL, 3MM 9117 WI SUL |
| Arrangement Configuration | Single, universally ground (SU) |
| Precision Class | P4S (ABEC 7/9) |
| Cage Material | Phenolic |
| Number Of Rows | 1 |
| Contact Angle | 25 Degrees |
| Design Units | Metric |
| Part Number | 3MM9117WI-SUL |
| Cross Reference 1 | 7017E-T-P4S |
|---|---|
| Cross Reference 2 | 3MM9117WI-DUL |
| Cross Reference 3 | 3MM9117WI |
A Fafnir 3MM9117WI-SUL super precision single-row angular contact ball bearing. Bore 85 mm, outside diameter 130 mm, width 22 mm, in the ISO 7017 envelope. Open on both faces, with a phenolic cage.
3MM — 25° contact angle
MM prefix — P4S precision, ABEC 7/9
9117 — ISO 70 light series, bore code 17 = 85 mm
WI — Fafnir super-precision angular contact series
SU — single, universally ground for stacking in any arrangement
L — light preload
A 25° contact angle carries more thrust and less speed than a 15° bearing of the same envelope, which makes it the usual choice where axial stiffness governs. Light preload holds running torque and heat generation down. A single row takes thrust in one direction only.
Bore: 85 mm (3.3465 in)
Outside diameter: 130 mm (5.1181 in)
Width: 22 mm (0.8661 in)
Contact angle: 25°
Precision class: P4S (ABEC 7/9)
Preload: light
Rolling elements: steel balls, single row
Cage: phenolic
Closure: open both faces
1 Pc. Single bearing, universally ground.
Universal grinding allows mounting alone or stacking back-to-back, face-to-face or in tandem, with preload set by the ground faces. The bearing is pressed on whichever ring carries the interference fit, against a clean square shoulder.
The ISO equivalent designation is 7017E-T-P4S at 25°. A 2MM9117WI shares the envelope at a 15° contact angle and is a related size rather than an interchange, as are medium and heavy preload variants.
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