Tapered Roller Bearings
518980 Tapered Roller Bearings
518980 Tapered Roller Bearings 518980 single row tapered roller bearings
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Product Overview
518980 Tapered roller bearings apply to paper machinery, speed reducer, rail vehicle axle, rolling mill gear box, vibrating screen, printing machine, wood-working machine, reducer in all kinds industry etc.
Key Benefits
- The tapered raceway geometry lets one bearing take combined radial and axial load at low to moderate speeds, which is why four row units are used almost exclusively in work roll applications such as rolling mills.
- Dimensions, material, cage and precision class are confirmed in writing before the order is placed.
- Stock and produced lines are quoted separately so a shutdown can be planned around real dates.
- Non standard sizes can be made to drawing, so a fixed machine envelope is not a dead end.
Who It Is For
Rolling mill work-roll shops, axle and gearbox builders, truck and trailer part distributors, agricultural machinery makers.
Problems It Solves
Four row work-roll assemblies and inch-series double row units are long-lead items that many suppliers will only quote as complete new mill spares packages.
Specifications
Recorded Specification
Every row below comes from the manufacturing record for this reference. Rows that were never filled in are omitted rather than guessed.
| Product Name | 518980 Tapered Roller Bearings |
|---|---|
| Brand | AFA |
| Material | GCr15, GCr15SiMn,cemented steel |
| Precision Class | P0 P6 P5 P4 P2 |
| Sealing | Open |
| Quality Standard | ISO9001:2008 standard |
| Delivery Time | Stock 3 days, no stock 20 days |
| Packing | Wood boxes |
| Payment Terms | L/C,T/T,Western Union |
| Stock Quantity | 20 PCS |
Application Scenarios
Where It Is Used
- Rolling mill work rolls and back-up rolls
- Automobile front wheel, back wheel and speed changer
- Rail vehicle axle boxes
- Gearboxes, reducers and pinion shafts
- Vibrating screens and printing machinery
Materials
GCr15, GCr15SiMn,cemented steel. GCr15 is the standard high carbon chrome bearing steel, and GCr15SiMn adds silicon and manganese so that larger rings harden through the section. Case carburised grades are used where shock loading is high.
Material GuideDelivery And Packing
| Delivery | Stock 3 days, no stock 20 days |
|---|---|
| Packing | Wood boxes |
| Freight | DHL, TNT, FedEx and other express; air, sea and rail |
| Payment | L/C,T/T,Western Union |
| Quality | ISO9001:2008 standard |
Manufacturing Process
How It Is Made
Forging And Turning
Rings are formed and soft turned to the ring geometry.
Heat Treatment
Through hardening or carburising to the working hardness range.
Grinding And Honing
Raceways and faces ground to the tolerance class ordered.
Assembly And Preservation
Rolling elements and cage assembled, then preserved and packed.
Quality Control
What Is Checked
- Bore, outside diameter and width against the tolerance class ordered
- Radial and axial runout on the finished assembly
- Hardness and surface finish after grinding
- Internal clearance and rotation check before preservation
Certifications. Production runs in strict accordance with the ISO9001:2008 standard. Certificate copies for a specific consignment are issued with the shipping documents on request.
Customization Options
What Can Be Changed
| Precision class | P0 P6 P5 P4 P2 |
|---|---|
| Cage material | Brass, steel, bakelite or nylon by application |
| Internal clearance | Standard or a specified group |
| Marking | AFA brand, neutral, or customer marking |
| Packing | Wood boxes |
| Non standard sizes | Made to drawing or to a sample |
Comparison
How This Type Compares
| Type | Radial load | Axial load | Speed |
|---|---|---|---|
| Deep groove ball | Medium | Low | High |
| Angular contact ball | Medium | High one way | High |
| Cylindrical roller | High | None or located | High |
| Tapered roller | High | High one way | Medium |
| Needle roller | High for section | None | Medium |
| Thrust roller | None | Very high | Low to medium |
Use Guide
Fitting And Service Notes
- Check the shaft and housing seats for size, roundness and damage before opening the packaging.
- Push mounting force through the ring that carries the interference fit, never through the rolling elements.
- Where heat mounting is used, keep the bearing below roughly 120 degrees Celsius and never apply a flame.
- Set clearance or preload as the machine drawing specifies, then fill with the specified lubricant.
- Turn the assembly by hand and listen before the machine is started.
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Related Industries
Where It Is Specified
Metallurgy And Rolling Mills
Work roll chocks, screw-down units, coilers and runout tables run hot, dirty and continuously, and an unplanned bearing change cos…
Lifting Cranes And Handling
Hoists, slew drives and travel gear see intermittent shock loads and long idle periods, which is hard on both the rolling elements…
Paper Making And Printing
Dryer sections, calenders, refiners and printing units run at high temperature or high speed and are usually maintained during a s…
Related Articles
Technical Reading
Tapered Roller Bearings Explained
Internal Clearance Groups C2 CN C3 C4 And C5
Cross Referencing Bearings Between Manufacturers
Quote 518980 Tapered Roller Bearings
Send the quantity and destination. Dimensions, material, cage and precision class are confirmed in writing before the order.
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