E312 Bottom Roller Undercarriage Parts for CAT Caterpillar
Heavy-duty Caterpillar E312 bottom roller designed for optimal performance and durability. Manufactured with forged steel and surface hardening to ensure long service life in construction and excavation sites. Fully compatible with CAT E312 undercarriage systems.
| Material | 50Mn/40MnB |
|---|---|
| Surface Hardness | HRC53-58,deepth: 8-12mm |
| Colors | Black or yellow or customized |
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Kinton Parts is trusted by professionals worldwide for delivering high-quality parts for excavators, bulldozers, and other construction machinery—with guaranteed performance and durability.
Product Function and Operating Principle of E312 Bottom Roller
The Caterpillar E312 bottom roller is a critical component in the undercarriage system, supporting the excavator’s weight and ensuring stable, efficient track movement. Designed to handle continuous ground contact and high-impact working conditions, this roller offers reliable performance across a wide range of excavation tasks.
Materials and Heat Treatment of CAT Track Rollers
This E312 track roller is made from high-grade 45# steel with deep surface hardening (HRC 52-58) to resist wear and deformation. The inner bushings utilize alloy steel (40Cr or 42CrMo), delivering excellent load capacity and long-term durability under heavy-duty conditions.
E312 track rollers are forged, CNC machined, heat treated, and precision-assembled with strict dimensional tolerances. Each roller is pressure-tested and hardness-verified to ensure maximum strength and stability before shipping.
How We Manufacture the E312 Track Roller
Each E325 track roller is forged, machined, heat-treated, and assembled in-house with strict precision.
Heat Treatment
Machining Process
CNC turning and milling ensure dimensional accuracy
Assembly
Running Test
Simulated load test to verify functionality
Paint Spraying
Anti-rust coating for surface protection
Packing
OEM Undercarriage Parts for Caterpillar
| BRAND | MACHINERY MODEL NUMBER | |||||||
|---|---|---|---|---|---|---|---|---|
| CATERPILLAR-CAT | CAT55 | CAT225 | CAT245 | CAT311 | CAT312 | CAT312B | CAT315 | CAT320 |
| CAT320B | CAT320C | CAT320D | CAT320L | CAT322 | CAT324 | CAT325 | CAT325B | |
| CAT325BL | CAT330 | CAT330B | CAT330BL | CAT330C | CAT330D | CAT345 | CAT345B | |
| CAT973 | E55 | E70 | E70B | E120 | E120-1 | E120B | E140 | |
| E200B | E200-5 | E215 | E240 | E300B | E300L | E311 | E312 | |
| E312B | E320 | E320BL | E320C | E320D | E320DL | E320L | E320S | |
| E322B | E322C | E324 | E324D | E324DL | E325 | E325B | E325L | |
| E329DL | E330 | E330B | E330C | E330D | E330DL | E345 | E345B | |
| E450 | CAT301.5 | CAT302.5 | CAT303.5 | CAT305 | CAT307 | CAT308 | CAT313 | |
| CAT316 | CAT318 | CAT320E | CAT320GC | CAT323 | CAT326 | CAT329 | CAT336 | |
| CAT340 | CAT349 | CAT350 | CAT365 | CAT374 | CAT375 | CAT385 | CAT385CL | |
| CAT390 | CAT390D | CAT390DL | CAT390FL | CAT395 | CAT6015 | CAT6015B | CAT6015D | |
| CAT6020 | CAT6020B | CAT6030 | CAT6030B | CAT6030D | CAT6040 | CAT6040B | ||
Looking for a specific make or model not listed here? Reach out and we’ll be happy to assist.
Compatibility with Other Caterpillar Excavators
The E312 track roller is not only designed for the Caterpillar E312 excavator, but it also offers reliable compatibility with several other CAT models that share similar undercarriage systems. These include: CAT E311, E313, 312, 312B, 312C, 312D, 312D2, 312E, 313B, 313C, 313D, and M313D (depending on version). Due to the comparable track pitch and roller mounting dimensions, this roller is widely used across multiple 12–13 ton CAT excavators.
Before placing an order, we recommend checking your machine's serial number and the OEM reference number to ensure proper fit and performance. Our E312 bottom rollers meet or exceed OEM specifications, making them a cost-effective replacement for a wide range of Caterpillar excavators.
Please check your machine’s serial number for accurate replacement matching.
Quality Inspection and Durability Assurance
Each unit is tested for dimensional tolerance, surface hardness, sealing performance, and load-bearing strength. We perform rotational tests under simulated field loads to ensure every roller meets high-performance requirements for both construction and mining applications.
Application Scenarios
Applicable for:
- General excavation
- Earthmoving
- Utility construction
- Roadwork and pipeline trenching
Maintenance Tips for Extended Life
- Regularly check for oil leakage and clean debris around the roller
- Inspect for abnormal wear and rotate rollers when needed
- Avoid long-term idle exposure to acid, alkali, or wet soil environments
- Re-lubricate at recommended intervals if applicable
SHIPPING & DELIVERY
At Kinton Parts, we ensure reliable, worldwide shipping of parts for excavators, bulldozers, and a full range of construction machines—safe, fast, and secure.
All products are securely packed using high-quality export cartons, reinforced wooden cases, or industry-standard palletized packaging to ensure maximum protection during transit and smooth handling during unloading.
Standard orders are typically shipped within 3–5 working days, while large or customized orders are usually dispatched within 7–20 days, depending on volume and production requirements.
We offer flexible global shipping options, including:
- International sea freight for cost-effective bulk transport
- Air freight for urgent orders
- Courier delivery (DHL, FedEx, UPS) for small-volume or sample shipments
Our logistics team manages every shipment carefully, providing real-time updates and tracking information until your order arrives safely at your destination.
Need assistance choosing the best shipping method for your location and timeline? Contact our team — we’ll help you plan a smooth delivery experience.
FAQ
Q: What are your main products?
A: We supply a full range of undercarriage and wear parts for excavators, bulldozers, and other heavy equipment. Our product line includes: Track rollers, carrier rollers, front idlers, sprockets, segments, track shoes, track chains, bolt and nuts, pins and bushings, bucket teeth and adaptors, filters, seal kits, swing bearing, and hydraulic cylinder—plus other essential replacement parts.
Q: Which countries do you export to?
A: Kinton Parts exports to over 60 countries worldwide, including:
USA, Canada, UK, Germany, Russia, UAE, Indonesia, Malaysia, Thailand, India, Pakistan, Bangladesh, Sri Lanka, South Africa, Colombia, Peru, and many others.
Q: Can I order a sample?
A: Yes, we accept trial orders. For parts in stock, samples can be shipped quickly. If you have technical drawings or existing samples, we also support customized production and mold development.
Q: How can I track my order after shipping?
A: Once your order is shipped, we will provide you with all necessary tracking information based on the shipping method. For express deliveries, you’ll receive a tracking number to follow the shipment online. For air or sea freight, we’ll send you the relevant documents such as the airway bill (AWB) or bill of lading (B/L), along with the packing list and commercial invoice to help with tracking and customs clearance.
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Trusted by professionals worldwide, Kinton Parts supplies premium-quality components for excavators, bulldozers, and more—with reliable quality you can count on.
