Needle Roller Bearings
MR132 needle roller bearing
MR132 Heavy Duty Needle Roller Bearing
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Product Overview
MR132 needle roller bearings apply to automobile front wheel, back wheel, speed changer, shaft pinion, machine tool spindle, building machine, large agricultural machinery.
Railway vehicle, gear speed reducer and so on.
Key Benefits
- The small roller diameter gives high radial capacity where the space between shaft and housing is very limited, which is why they dominate transmissions and planetary gear sets.
- 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
Transmission and gearbox builders, hydraulic pump makers, construction equipment part distributors.
Problems It Solves
Needle assemblies are dimension critical and often carry a machine builder part number rather than an ISO designation, which makes cross referencing slow.
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 | MR132 needle roller bearing |
|---|---|
| Brand | AFA From England |
| Dimension (dxDxH) | 8.25X10.125X3 inch |
| Weight (kg) | 9KG |
| Material | GCr15, GCr15SiMn ,Chrome steel |
| Precision Class | P0 P6 P5 P4 P2 |
| Quality Standard | ISO9001:2008 standard |
| Delivery Time | Stock 3 days, no stock 25 days |
| Packing | Wood boxes |
| Payment Terms | L/C,T/T,Western Union,paypal |
Application Scenarios
Where It Is Used
- Automobile speed changers and shaft pinions
- Construction and earthmoving equipment
- Hydraulic pumps and motors
- Planetary gear sets
- Agricultural machinery drivelines
Materials
GCr15, GCr15SiMn ,Chrome 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 25 days |
|---|---|
| Packing | Wood boxes |
| Freight | DHL, TNT, FedEx and other express; air, sea and rail |
| Payment | L/C,T/T,Western Union,paypal |
| 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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Where It Is Specified
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Technical Reading
Needle Roller Bearings Explained
Bearing Steel And Material Selection
Mounting And Dismounting Rolling Bearings
Quote MR132 needle roller bearing
Send the quantity and destination. Dimensions, material, cage and precision class are confirmed in writing before the order.
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