Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Your message must
be between 20-3,000 characters!
Submit Requirement
Thank You！
Your requirement has been sent. we will contact you quickly!
{"title":"OEM Replacement Part 41-7345 Excavator Top Roller with Heat Treated Coating and","imgUrl":"https:\/\/img.chinax.com\/nimg\/42\/83\/4431c76b03e761bd63366366f115-200x200-1\/oem_replacement_part_41_7345_excavator_top_roller_with_heat_treated_coating_and.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"E312B\/E313B\/E120C\/E313C\/E120B\/E313C","Certification":"ISO9001","Place of Origin":"CHINA"}}
{"title":"Doosan DX225LC OEM Direct Replacement Top Roller with HRC50-58 Surface Hardness","imgUrl":"https:\/\/img.chinax.com\/nimg\/6e\/fb\/4093183492d74e85bfce2882dcfd-200x200-1\/doosan_dx225lc_oem_direct_replacement_top_roller_with_hrc50_58_surface_hardness_and_cnc_precision_machining.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"DX225LC-3\/DX225LC-5","Certification":"ISO9001,ISO9001-9002","Place of Origin":"CHINA"}}
{"title":"Doosan DX200A DX200LC OEM Replacement Top Roller with 50Mn Wheel Body and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/1d\/4cd35a2e5d968553a66d65dc21b0-200x200-1\/doosan_dx200a_dx200lc_oem_replacement_top_roller_with_50mn_wheel_body_and_cnc_precision_processing.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"DX200A\/DX200LC","Certification":"ISO9001","Place of Origin":"CHINA"}}
{"title":"Doosan OEM Replacement Top Roller with 40Mn Material and 1 Year Warranty for","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/49\/37e6716ce3837486f21f6274d8b8-200x200-1\/doosan_oem_replacement_top_roller_with_40mn_material_and_1_year_warranty_for_dx220lc_9_dx225lc_9_excavators.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"DX220LC-9 DX225LC-9 DX200A DX200LC DX225LCA DX260LCA","Certification":"ISO9001","Place of Origin":"CHINA"}}
{"title":"Komatsu PC200-5 PC200-6 OEM Replacement Top Roller with High-strength 50Mn Steel","imgUrl":"https:\/\/img.chinax.com\/nimg\/9a\/ba\/173a13cf8758e4227374fd904b0e-200x200-1\/komatsu_pc200_5_pc200_6_oem_replacement_top_roller_with_high_strength_50mn_steel_and_hrc52_58_hardness.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"PC200-5\/PC200-6","Certification":"ISO9001","Place of Origin":"CHINA"}}
{"title":"CAT 120B Top Roller OEM Direct Replacement Heat Treated and Coated with CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/94\/4a\/c06ac189ccbbd63fe2fbff106522-200x200-1\/cat_120b_top_roller_oem_direct_replacement_heat_treated_and_coated_with_cnc_ultra_precision_machining_for_excavators.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"CAT120B\/E120B","Certification":"ISO9001","Place of Origin":"CHINA"}}
{"title":"CAT311 OEM Direct Replacement Top Roller with Heat Treatment HRC 52-58 and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/70\/ce\/5e8858073240c616404e5d2b0d36-200x200-1\/cat311_oem_direct_replacement_top_roller_with_heat_treatment_hrc_52_58_and_cnc_ultra_precision_machining_for_excavator_undercarria.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"CAT 311 \/ 311B \/ 311C","Certification":"ISO9001","Place of Origin":"CHINA"}}
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.
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2015
Total Annual:
5000000-8000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin... Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin...
