Cat E312 Excavator Undercarriage Part Track Roller Digger Bottom Roller
imed at customers operating in the Aftermarket, FRJX’s e-commerce hosts the product offers of FRJX of America for the North American markets and FRJX Aftermarket for customers in Africa, Asia, Europe and South America.
Order your undercarriage components and products online in our shop.
FRJX is a manufacturer of undercarriage systems for mining machines, tracked construction vehicles and other applications. We operate globally, providing our customers with the most advanced undercarriage components, to face the challenges of the industry.
Rollers Features
- FRJX undercarriage rollers are designed for the high-demanding duty cycle of a mining excavator.
- Mining excavator track rollers and carrier rollers are sealed for life using the most advanced sealing system solutions.
- The usage of Boron steel grade and dedicated heat treatment devices provide superior mechanical resistance and excellent impact resistance.
Rollers Features
- Rollers for medium-range excavators are sealed for life using the most advanced sealing system solutions.
- Roller shells are differential quenched to provide high wear resistance at the rail diameter and high mechanical strength at the inner diameter to avoid any kind of deformation under load.
More than 900 different models of undercarriage rollers for all types of equipment and applications.
For excavators, dozers and tracked vehicles weighing 1 to 330 tons.
Single-flange, double-flange and inner flange rollers.
All weather versions available for temperatures ranging from -45°C to 50°C.
BRAND | Model |
BULLDOZER | D20 | D30 | D31 | D37 | D40 | D41 | D45 | D50 | D60 |
D65 | D68 | D75 | D80 | D85 | D150 | D155 | D275 | D355 |
D3C | D3D | D4C | D4D | D4H | D5 | D6C | D6D | D6H |
D7G | D8K | D8N | D9N | D10N | D11N | | | |
KOMATSU | PC30 | PC40 | PC45 | PC60 | PC75 | PC100 | PC120 | PC150 | PC200 |
PC220 | PC300 | PC350 | PC400 | | | | | |
CATERPILLAR | E70B | E110 | E120B | E215 | E235 | E307 | E311 | E312 | E322 |
E180 | E240 | E200B | E320 | E300 | E300B | E330 | E325 | |
HITACHI | EX30 | EX40 | EX60 | EX100 | EX120 | EX200 | EX220 | EX270 | EX300 |
EX400 | EX600 | UH043 | UH052 | UH53 | UH07 | UH081 | UH082 | UH083 |
FIAT-HITACHI | FH120 | FH130 | FH150 | FH200 | FH220 | FH270 | FH300 | | |
VOLVO | EC55 | EC130 | EC150 | EC200 | EC210 | EC240 | EC290 | EC360 | |
DAEWOO | DH55 | DH130 | DH180 | DH200 | DH280 | DH300 | DH320 | | |
HYUNDAI | R60 | R130 | R200 | R210 | R220 | R290 | R320 | R914 | |
KATO | HD250 | HD400 | HD450 | HD700 | HD770 | HD820 | HD1250 | | |
KOBELCO | SK40 | SK60 | SK100 | SK120 | SK200 | SK220 | SK04-2 | SK07 | |
SK07N2 | SK09 | SK12 | SK14 | SK300 | SK310 | SK400 | | |
JCB | JS70 | JS75 | JS110 | JS130 | JS160 | JS180 | JS200 | JS220 | |
JS240 | JS260 | JS300 | JS330 | | | | | |
SUMITOMO | SH70 | SH100 | SH120 | SH160 | SH200 | SH260 | SH265 | SH280 | SH300 |
SH340 | LS2650 | LS2800 | LS3400 | LS4300 | | | | |
MX8 | SE200 | SE210 | SE280 | MX292 | SE350 | | | |
MITSUBISHI | MS110 | MS120 | MS140 | MS180 | | | | | |
All manufacturer's names,symbols&descriptions are used for reference purpose only,and it is not implied that and any part listed is the product of these manufacturers.



Rollers Features
- Undercarriage rollers are sealed for life using the most advanced sealing system solutions.
- Mining dozer roller shells are differential quenched to provide high wear resistance at the rail diameter and high mechanical strength at the inner diameter to avoid any kind of deformation under load.
Find the FRJX dealer nearest to you.
Our dealer network spreads to more than 80 countries, with that we are able to supply FRJX undercarriage technology around the world. Find our dealers and get in touch for exclusive services.
FAQ:
1. You are a trader or a manufacture?
We are an industry and trade integration business, our factory located on Quanzhou Nanan Distric, and our sales department is in City centre of Xiamen. The distance is 80Kms, 1.5 hours.
2. How can I be sure the part will fit my excavator?
Give us correct model number/machine serial number/ any numbers on the parts itself. Or measure the parts give us dimension or drawing.
3. How about the payment terms?
We usually accept T/T or Trade Assurance. other terms also could be negotiated.
4. What is your minimum order?
It depends on what you are buying. Normally, our minimum order is one 20' full container and LCL container (less than a container load) can be acceptable.
5. What is your delivery time?
FOB Xiamen or any Chinese port : 20 days . If there are any parts in stock , our delivery time is only 0-7 days.
6. What about Quality Control?
We have a perfect QC system for the perfect products. A team who will detect the product quality and specification piece carefully, monitoring every production process until packing is complete, to ensure product safety into container.
EMAIL:mei-hua-1985@163.com
Quanzhou Fengrui Machinery Co., Ltd
Quanzhou Fengrui Machinery Co., Ltd is a modern industry and trade
integrated enterprise specializing in the R&D, manufacturing,
and sales of construction machinery components. The company is loed
in Quanzhou City, Fujian Province, the starting point of the
"Maritime Silk Road" in the Golden Triangle of Southern Fujian,
with very convenient transportation. The company mainly produces
various types of excavators and bulldozers' supporting wheels,
carrier rollers, drive wheels, guide wheels, rail chain assemblies,
frames, various hydraulic cylinders, shafts, sets of high-strength
bolts, gears, and other mechanical components. Bori Machinery has
first-class production equipment and advanced testing methods in
China, adopts advanced technology, and relies on reliable quality,
rich varieties, reasonable prices, and good reputation. Its
products are sold well throughout the country, and are exported to
Europe, the United States, the Middle East, and Southeast Asia.
Looking forward to the future, Brilliant Trading will continue to
improve its production and competitiveness, and improve its sales
service network based on its existing foundation. On the basis of
"quality based, honesty based, mutual benefit, and common
development", we have established long-term and good business
partnership with global economic and trade professionals. Through
the implementation of brand strategy, we will explore the future
with high quality, build Borui Trade into a stronger brand for
manufacturing engineering machinery parts, and provide customers
with faster and better services. Warmly welcome new and old
merchants from home and abroad to come, call for consultation,
negotiate, and work together to create a better future!