
50x80x36.4mm SB208/50ZZ CS Spherical Outer Ring Insert Bearing
| Item No : | SB208-50ZZ CS (SB208-50ZZ Series) |
| Size (d*D*B) : | 50x80x36.4mm |
| Material : | Chrome steel Gcr15 |
| Lead Time : | 3-5 days |
| Weight: | 0.408KG |
| MOQ : | 10 pcs |
⚙️Product Description:
Sourcing rugged, high-reliability powertrain components to counteract structural misalignment in heavy conveyor lines or agricultural setups? Our SB208/50ZZ CS Spherical Outer Ring Insert Ball Bearing (Size: 50x80x36.4mm) delivers the ultimate self-aligning performance. Engineered with a specialized convex spherical outer diameter, it integrates flawlessly into pillow blocks or flanged housings to compensate for initial shaft deviations automatically. Featuring a narrow inner ring profile optimized for space efficiency, it locks firmly onto the shaft using secure grub/set screws. Outfitted with dual-sided metal shields (ZZ), it ensures premium factory grease retention while locking out harsh field dust. As an international B2B bearing trading specialist, we supply this high-demand insert element under our highly competitive proprietary “RMO” brand for bulk wholesale markup, while offering seamless procurement paths for global tier-1 premium brands to match your exact OEM specifications.

⚙️Product Features:
- Spherical Outer Ring Self-Alignment: The convex outer geometry accommodates structural flex and angular mounting misalignments smoothly without escalating internal friction.
- Space-Saving Narrow Inner Ring: Features a streamlined inner ring width profile, reducing axial footprint while maintaining high load-bearing integrity.
- Robust Set Screw Locking System: Equipped with precision-tapped grub screws on the extended ring for direct, vibration-resistant gripping onto the driven shaft.
- Double Metal Shields (ZZ): Pressed carbon steel shields prevent grease leakage and provide robust mechanical shielding against abrasive airborne particulates.
- Flexible Multi-Brand Supply: Optimize your sourcing cost with our direct factory RMO brand distribution, or specify premium international tier-1 alternative brands via our trading network.
⚙️Product Application:
Formulated for high environmental tolerance and easy mounting alignment, the SB208/50ZZ CS insert bearing is widely utilized in:
- Agricultural machinery (combine harvesters, field balers, grain augers, and sorting systems).
- Material handling equipment, industrial belt conveyors, and roller transport tracks.
- Packaging machinery, textile weaving looms, and industrial drying tunnels.
- Food and beverage processing lines, bottling plants, and commercial bakery ovens.
- Ventilation systems, heavy-duty industrial fan housings, and air filtration drives.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
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⚙️Technical Parameters:
| Model No. | SB208-50ZZ CS (SB208-50ZZ Series) |
| Bearing Type | Spherical Outer Ring Insert Ball Bearing |
| Size | 50x80x36.4mm, Outer Ring Width: 18mm |
| Locking Mechanism | Set Screw / Grub Screw Locking |
| Material | Chrome Steel GCr15 |
| Sealing Form | Double-sided Metal Shields (ZZ / Cold-rolled Steel) |
| Precision | P0 (ABEC-1) / P6 (ABEC-3) |
| Brand | RMO/Neutral/OEM/Other Brands |
| Working Temperature Range | -20°C to +120°C |
| Lead Time | 3-5 days for stock; 7-15 days for bulk orders |
| Package | Individual plastic bag, plastic tube or original RMO brand box |
| Shipping | Express (DHL/FedEx/UPS), Air Freight, Sea Freight |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |

| Model No. | d | D | H | m | Model No. | d | D | H | m |
| SB201 | 12 mm | 40 mm | 22 mm | 100 g | SB206-18 | 28.58 mm | 62 mm | 30 mm | 260 g |
| SB201-08 | 12.7 mm | 40 mm | 22 mm | 100 g | SB206 | 30 mm | 62 mm | 30 mm | 250 g |
| SB202 | 15 mm | 40 mm | 22 mm | 90 g | SB206-19 | 30.16 mm | 62 mm | 30 mm | 250 g |
| SB202-10 | 15.88 mm | 40 mm | 22 mm | 90 g | SB206-20 | 31.75 mm | 62 mm | 30 mm | 240 g |
| SB203 | 17 mm | 40 mm | 22 mm | 80 g | SB207-20 | 31.75 mm | 72mm | 32mm | 430 g |
| SB204-12 | 19.05 mm | 47 mm | 25 mm | 130 g | SB207-21 | 33.34 mm | 72 mm | 32 mm | 420 g |
| SB204 | 20 mm | 47 mm | 25 mm | 130 g | SB207-22 | 34.92 mm | 72 mm | 32 mm | 380 g |
| SB205-14 | 22.22 mm | 52 mm | 27 mm | 180 g | SB207 | 35 mm | 72 mm | 32 mm | 380 g |
| SB205-15 | 23.81 mm | 52 mm | 27 mm | 180 g | SB207-23 | 36.51 mm | 72 mm | 32 mm | 310 g |
| SB205 | 25 mm | 52 mm | 27 mm | 160 g | SB208-24 | 38.1 mm | 80 mm | 34 mm | 520 g |
| SB205-16 | 25.4 mm | 52 mm | 27 mm | 160 g | SB208-50 | 50 mm | 80 mm | 36 mm | 408 g |
| SB206-17 | 26.99 mm | 62 mm | 30 mm | 270 g | SB208 | 40 mm | 80 mm | 34 mm | 500 g |
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