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OEM Replacement Part 41-7345 Excavator Top Roller with Heat Treated Coating and CNC Ultra-Precision Machining ±0.01mm
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OEM Replacement Part 41-7345 Excavator Top Roller with Heat Treated Coating and CNC Ultra-Precision Machining ±0.01mm
| MOQ: | 1PCS |
| Price: | US$19-34 |
| Standard Packaging: | Standard Export Packaging |
| Delivery Period: | 7-15Days |
| Payment Method: | L/C,T/T |
| Supply Capacity: | 10000PCS/Months |
Detail Information
Place of Origin
CHINA
Brand Name
ZTMC
Certification
ISO9001
Model Number
E312B/E313B/E120C/E313C/E120B/E313C
Features:
Durable
Hs Code:
8431499900
Trademark:
None
Diameter:
Variable, Typically 200-400 Mm
Dimension:
Standard
Featurse:
Durable
Productname:
Excavator Top Roller Carrier Roller
Surfacetreatment:
Heat Treated And Coated For Wear Resistance
Machinery Test Report:
Provided
Appliion:
Construction Works
Standard:
ISO
Description:
Heavy Excavator
Surface Hardness:
HRC50-56; Depth 5-8mm
Warranty:
Typically 6-12 Months
Delivery:
By Air/Express/Sea
Color:
Black Or Yellow
Product Description
CAT 312B CAT 313 Top Roller, OEM Replacement Part 41-7345
This carrier top roller is a direct OEM replacement for CAT 312B and CAT 313 excavators, designed for earthmoving, quarry, and construction site applications.
Product Overview
This carrier top roller is a 1:1 OEM direct replacement for CAT 312B and CAT 313 excavators, marked with part number 41-7345. No cutting, drilling or other secondary processing is needed during installation. It is built for long-term heavy-duty use and addresses common undercarriage operating issues of CAT 312B and 313 equipment fleets.
Product Specification
| Item | Specification |
|---|---|
| OEM Part Number | 41-7345 |
| Applicable Excavator Model | CAT 312B / CAT 313 |
| Machining Tolerance | ±0.01mm CNC ultra-precision machining |
| Heat Treatment Process | Overall quenching + stress relief tempering |
| Applicable Working Scenarios | Muddy construction site, gravel quarry, road renovation, rough earthmoving terrain |
| Installation Type | Plug-and-play OEM direct replacement |
Applicable Working Environments
These models are widely used in municipal works, small-scale quarrying and road maintenance. Long-term muddy water immersion, gravel friction and continuous impact load will cause ordinary rollers to develop track shaking, track sagging, seal leakage and shaft jamming. This component is engineered to adapt to such complex working conditions and maintain stable operation.
Core Production Technology
We adopt one-piece integral forging steel blanks to guarantee structural stability. Two standard heat treatment processes are applied: quenching improves surface hardness to resist abrasive wear; tempering removes internal stress and prevents shell cracking under repeated impact. All mounting holes and contact surfaces are processed by CNC equipment, with machining error controlled within 0.01mm, fully conforming to original factory dimensions.
On-site Installation Steps
- Raise the excavator track with a hydraulic jack to separate it from the ground and release partial track tension.
- Remove fixing bolts of the old roller, take out the damaged part and clean dust and sediment on the mounting base.
- Place the new roller in position and align the bolt holes accurately.
- Fasten all bolts with standard torque, reset track tension and test idle running.
- Confirm no abnormal vibration or friction noise to complete installation.
Optimized On-site Operation Performance
- Precise dimensions eliminate track deviation and walking vibration
- Reinforced sealing structure prevents muddy water ingress and oil leakage
- Complete heat treatment lowers the risk of roller shell fracture
- Direct installation saves on-site maintenance time and labor cost
Real Customer Cooperation Case
A local construction service team runs multiple CAT 312B and 313 excavators. Previously used generic rollers failed within 690-840 working hours. After switching to our products, the rollers operate stably for over 1800 working hours without faults, reducing annual undercarriage maintenance costs by 33%.
Frequently Asked Questions
Q1: Is this part compatible with both CAT 312B and CAT 313?
A: Yes. Part No. 41-7345 fits both models perfectly, no adjustment is required during installation.
Q2: What is the difference between our products and generic rollers?
A: Most generic products skip tempering and have dimensional tolerance above 0.05mm. Our dual heat treatment and 0.01mm high-precision machining ensure reliable performance in harsh environments.
Q3: Can you provide inspection documents for bulk orders?
A: Yes. We supply heat treatment test reports and dimensional inspection reports for all bulk shipments.
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