RBY208 Insert Ball Bearing Self-aligning 40x80x49.2mm for Textile Packaging & Farm Conveyor Equipment
- RBY208 is a widely used spherical outer insert ball bearing with extended double-side inner ring and dual set screw locking structure, interchangeable with YAR208-2F standard bearing. Its overall dimension is 40×80×49.2mm, equipped with double lip rubber contact seal and relubriion port. Made of high-quality GCr15 chrome steel, this bearing features excellent self-aligning performance, stable rotation and good dust resistance. It is mainly applied to industrial conveyor systems, textile and packaging machinery, and also suitable for light-duty agricultural conveying equipment. With nearly 30 years of bearing manufacturing experience, GQZ provides sufficient stock, fast delivery and OEM customization service.
*Send inquiry to get full technical datasheet and factory price of RBY208 bearing.
| Parameter Item | Specifiion |
|---|---|
| Full Model | RBY208 |
| Bearing Type | Spherical Outer Insert Ball Bearing (Extended Inner Ring, Set Screw Locking) |
| Inner Diameter (d) | 40 mm |
| Outer Diameter (D) | 80 mm |
| Total Inner Ring Width | 49.2 mm |
| Outer Ring Width | 21 mm |
| Outer Ring Shape | Spherical (Self-aligning Outer Race) |
| Locking Mode | Two Set Screws on Inner Ring |
| Seal Structure | Double Lip Contact Rubber Seal (2RS) |
| Internal Clearance | C0 Normal Clearance |
| Material | Rings & Balls: GCr15 Chrome Bearing Steel |
| Cage | Glass Fiber Nylon Cage |
| Dynamic Load Rating (Cr) | 30.7 kN |
| Static Load Rating (Cor) | 19.0 kN |
| Limiting Speed (Grease) | 4800 rpm |
| Approx Net Weight | 0.43 kg |
- Spherical outer ring realizes automatic alignment to offset installation misalignment and shaft deflection
- Extended inner ring + double set screw locking, firmly fixed on shaft without slipping forward/reverse rotation
- Double lip rubber seal effectively blocks dust and splashing water for clean workshop environments
- Built-in grease nipple for convenient regular lubriion maintenance
- Nylon lightweight cage, low noise, smooth running and fatigue resistant
- Perfectly matched with all UCP/UCF/UCFL208 series cast iron bearing housings
- ISO9001 certified production, stable quality and competitive factory wholesale price
- Industrial logistics: belt conveyors, roller conveying lines, warehouse transmission equipment
- Light industry: textile machines, food processing, packaging and printing machinery
- General equipment: industrial fans, small reducers, woodworking machinery
- Compatible light agricultural machinery: grain conveyors, hay baler auxiliary rotating parts
- High-purity GCr15 bearing steel with standardized heat treatment for stable hardness and wear resistance.
- Precision ground spherical raceway ensures reliable self-aligning performance.
- Strict dimensional inspection to guarantee consistent clearance and rotation smoothness.
- Ready stock of 12 series self-aligning ball bearings, support sample orders and fast bulk delivery.
- OEM laser marking and customized packaging available for global wholesale buyers.
*Contact our engineer to select precision grade and cage for your machine spindle.
Q1: What are the dimensions of RBY208 bearing?
A: Standard size: 40mm inner diameter × 80mm outer diameter × 49.2mm total inner ring width.
Q2: What is the locking method of this bearing?
A: Fixed by two grub screws on the inner ring for shaft locking.
Q3: Can it be used together with UCP208 pillow block housing?
A: Yes, fully interchangeable and compatible with all 208 series bearing seats.
Q4: Does this bearing have dustproof seals?
A: It adopts double-sided contact rubber seals for good dust-proof performance.
Q5: Do you accept OEM customization?
A: We support custom logo, packaging, grease and precision grade adjustment.
Q6: How long is your delivery period?
A: Standard bearings in stock can be shipped out within 2-5 working days after order confirmation.
*Stable stock for thin-wall cylindrical roller bearings, support fast bulk shipment.
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