| Symbol | Value | Description |
|---|---|---|
| ≈m | 0.755 kg | Weight |
| Cr | 84.000 N | Basic dynamic load rating, radial |
| C0r | 62.000 N | Basic static load rating, radial |
| Cur | 4.350 N | Fatigue load limit, radial |
| nG | 15.400 1/min | Limiting speed |
| nϑr | 6.400 1/min | Reference speed |

FAG
Four-Point Contact Ball Bearing
From US$89.28
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| fag:QJ308-XL-MPA | US$89.28 |
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
FAG QJ308-XL-MPA Four-Point Contact Ball Bearing is a compact angular contact design that can support axial load in both directions and a portion of radial load in a single bearing. It suits gearboxes, cranes, and rotary tables where axial space saving and shaft location are required.
A split inner ring or specially shaped raceway allows the balls to contact at four points. It can replace certain paired angular contact arrangements while reducing axial width.
Confirm axial load dominance, radial load ratio, speed, internal clearance, and the companion bearing arrangement.
| Symbol | Value | Description |
|---|---|---|
| ≈m | 0.755 kg | Weight |
| Cr | 84.000 N | Basic dynamic load rating, radial |
| C0r | 62.000 N | Basic static load rating, radial |
| Cur | 4.350 N | Fatigue load limit, radial |
| nG | 15.400 1/min | Limiting speed |
| nϑr | 6.400 1/min | Reference speed |
| Symbol | Value | Description |
|---|---|---|
| d | 40 mm | Bore diameter |
| D | 90 mm | Outside diameter |
| B | 23 mm | Width |
| r1, 2 min | 1,5 mm | Minimum chamfer dimension |
| D1 | 73,35 mm | Shoulder diameter, outer ring |
| d1 | 56,65 mm | Shoulder diameter, inner ring |
| Symbol | Value | Description |
|---|---|---|
| da min | 49 mm | Min. shoulder diameter for mounting, inner ring |
| Da max | 81 mm | Max. shoulder diameter for mounting, housing |
| ra max | 1,5 mm | Max. fillet radius |
| Symbol | Value | Description |
|---|---|---|
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 150 °C | Operating temperature max. |
| Code | Description |
|---|---|
| MPA | Cage |
| PN | Tolerance class |
The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:
QJ308XLMPAQJ308 XL MPAQJ308XL MPAQJ308 XLMPAQJ308QJ308XLFAGQJ308XLMPAFAG QJ308 XL MPAFAGQJ308 XL MPAFAGQJ308XL MPAFAG QJ308XLMPAFAG QJ308 XLMPAFrom US$89.28
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| fag:QJ308-XL-MPA | US$89.28 |

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