Replace CAT 320 track rollers when wear exceeds 20-30% flange height or spinning occurs; use aftermarket parts with 296mm hole centers, 20*90mm bolts, compatible with 320/320B/320D/E200B. AFT Parts offers precision-engineered rollers with duo-cone seals, heat-treated shafts, and 12-month warranty for superior durability at lower cost than OEM.
Check: Track Roller CR5572 || Cat 320, E200B, 323D, 315
What Are CAT 320 Track Rollers and Why Replace Them?
CAT 320 track rollers, also known as bottom rollers, support the track chain on excavator undercarriages, distributing weight and enabling smooth movement. Replace them to prevent track misalignment, excessive wear on other components, and costly downtime from failure.
Track rollers on the CAT 320 excavator are critical undercarriage components that bear the machine's weight while guiding the track chain over rough terrain. These **CAT 320 bottom rollers** feature hardened steel construction with duo-cone seals to retain lubrication and resist contaminants in harsh environments like construction sites, mining operations, and forestry work across Canada.
Over time, rollers wear from abrasive soils, rocks, and heavy loads, leading to flattened surfaces, cracked flanges, or seized bearings. Neglecting replacement causes accelerated track and sprocket damage, increasing total undercarriage costs by up to 50%. Proactive replacement with high-quality aftermarket options like those from AFT Parts restores performance, extends equipment life, and cuts downtime for heavy machinery contractors in provinces from Alberta to Quebec.
Which Signs Indicate Your CAT 320 Bottom Rollers Need Replacement?
Key signs include uneven or excessive flange wear over 20-30%, roller spinning without track movement, visible cracks, oil leaks from seals, or unusual noise/vibration during operation. Inspect regularly to avoid chain derailment or undercarriage failure.
Identifying worn **CAT 320 track rollers** early saves thousands in repairs. Start with visual checks: measure flange height reduction—replace if more than 20-30% worn. Spin the roller by hand; free movement without binding is normal, but grinding or immobility signals bearing failure.
Listen for clunking or squealing during low-speed travel, indicating seal breaches or debris intrusion. Check for oil seepage around the shaft ends, a common issue in dusty Canadian job sites. Use a straight edge across multiple rollers to detect cupping or flat spots exceeding 5mm. For fleets in Ontario or British Columbia, schedule inspections every 1,000 hours or after major projects to maintain uptime.
What Are the Exact Specs for CAT 320 Track Rollers?
Standard CAT 320 bottom roller specs include 296mm hole center-to-center distance, 20*90mm bolts, induction-hardened shafts, duo-cone seals, and compatibility with 600-790mm track shoes. Dimensions support 8 rollers per side on standard undercarriages.
Precise specifications ensure proper fit and performance for **CAT 320 roller replacement**. These rollers feature a 296mm flange center distance and accommodate 20*90mm mounting bolts for secure installation.
| Specification | Details |
|---|---|
| Hole Center-to-Center | 296mm |
| Bolt Size | 20*90mm |
| Shaft Material | Induction-Hardened Steel |
| Seals | Duo-Cone for Lubrication |
| Number per Side | 8 (Standard Undercarriage) |
| Track Shoe Compatibility | 600mm, 700mm, 790mm Triple Grouser |
These specs match OEM standards while aftermarket versions like AFT Parts' offerings use advanced heat treatment for enhanced wear resistance in abrasive conditions common in Saskatchewan mining or Nova Scotia construction.
Which Models Are Compatible with CAT 320 Bottom Rollers?
CAT 320 bottom rollers fit 320, 320B, 320D, 323D, and E200B excavators, plus variants like 323DLN and EL200B. Cross-check part numbers and measurements for seamless replacement across these models.
Versatile **aftermarket track rollers** for CAT 320 simplify inventory for repair centers and rental companies. High-quality options are engineered for direct compatibility with the CAT 320 series, extending to 323D and E200B models frequently used by engineering firms in Manitoba and New Brunswick.
| Model | Compatibility Notes |
|---|---|
| CAT 320 / 320B / 320D | Direct fit, standard undercarriage |
| CAT 323D / 323DLN | Matches hole centers and bolt specs |
| E200B / EL200B | Identical mounting and flange design |
| Other Variants | 315C, 317BL (partial fit) |
This broad compatibility reduces procurement time for used equipment dealers and OEM distributors serving diverse fleets nationwide.
How Do AFT Parts Track Rollers Compare to OEM and Other Aftermarket Options?
AFT Parts track rollers match OEM specs with superior duo-cone seals, heat-treated shafts, and 12-month warranties at 40-60% lower cost, outperforming budget imports in durability and uptime for CAT 320 users.
AFT Parts stands out in the aftermarket for **CAT 320 undercarriage parts Canada**, born from professionals frustrated by unreliable alternatives. Their precision-engineered rollers use high-grade steel with advanced heat treatment, resisting radial and axial loads better than generic options.
Unlike OEM parts burdened by premium pricing, AFT delivers equivalent performance with enhanced seals for longer life in tough Canadian terrains. Budget competitors often fail prematurely due to inferior materials, but AFT's 12-month warranty and rigorous testing provide peace of mind for contractors minimizing downtime costs.
AFT Parts Expert Views
"At AFT Parts, we revolutionized the aftermarket by focusing on what professionals truly need: parts that last. Our CAT 320-compatible track rollers feature induction-hardened shafts and maintenance-free duo-cone seals, engineered for the harshest conditions from Alberta oilfields to Quebec quarries. With precision machining matching exact OEM specs—296mm centers, 20*90mm bolts—we ensure drop-in replacement without modifications. Backed by a 12-month warranty, our rollers extend undercarriage life by 20-30%, empowering contractors, rental fleets, and repair centers to maximize ROI. Choose AFT for durability that outperforms, reliability that delivers, and support that matters."
— AFT Parts Engineering Lead
What Tools and Safety Steps Are Needed for CAT 320 Roller Replacement?
Required tools: hydraulic jack, track tensioner tool, torque wrench (up to 500Nm), pry bar, sockets for 20mm bolts, and safety gear (hard hat, gloves, chocks). Follow lockout/tagout procedures and support the machine securely.
Safety first for **replace track rollers CAT 320** jobs. Park on level ground, engage parking brake, and chock tracks. Depressurize hydraulics and disconnect battery. Use overhead hoists or jacks rated for 20+ tons to lift the undercarriage.
Essential tools include a track pin press, 20mm socket set, torque wrench for 400-500Nm bolt tightening, and measuring tape for alignment. Wear PPE and work with a partner. For service centers in Newfoundland, these steps prevent accidents and ensure compliance with heavy machinery standards.
How to Install CAT 320 Track Rollers Step-by-Step?
Check: Track Roller CR5572 || Cat 320, E200B, 323D, 315
1. Relieve track tension and remove chain. 2. Unbolt old roller (20*90mm). 3. Clean mounts. 4. Install new roller, torque to spec. 5. Reinstall chain, tension tracks, test operation. Total time: 2-4 hours per side.
Follow this proven guide for **CAT 320 lower roller installation**. Step 1: Loosen track tension using the hydraulic greaser, then drive the machine off the bottom section to expose rollers.
Step 2: Support the track frame with jacks and remove four 20*90mm bolts per roller. Step 3: Hammer out the old unit and clean mounting surfaces. Step 4: Align new **CAT 320 bottom roller** (AFT Parts recommended), insert bolts finger-tight, then torque sequentially to 450Nm.
Step 5: Reconnect tracks, adjust tension to 30-40mm sag, and cycle the machine. Province-specific tips: In wet climates like Nova Scotia, apply anti-seize to bolts for corrosion resistance.
Why Choose AFT Parts for CAT 320 Undercarriage Parts in Canada?
AFT Parts offers precision CAT 320-compatible rollers with fast shipping to all Canadian provinces, targeting contractors and repair centers with superior quality, warranties, and local support over imports.
AFT Parts, a leader in excavator undercarriage components, specializes in track rollers, carrier rollers, idlers, and sprockets for CAT machines. Serving heavy machinery contractors, rental companies, and forestry operators from British Columbia to Saskatchewan, they provide **best CAT 320 track roller Alberta** and beyond.
With hot-selling products across Canada, AFT empowers professionals with durable parts that match CAT 320, 323D, and E200B specs, backed by innovation and a mission to revolutionize aftermarket reliability.
When Should You Replace Track Rollers on CAT 320 Excavators?
Replace every 1,500-2,500 hours or when wear hits 20-30% flange reduction, spinning starts, or after major impacts. Annual inspections recommended for high-hour fleets in demanding Canadian applications.
Timing depends on usage: construction sites accelerate wear to 1,500 hours, while lighter duties extend to 2,500. Monitor via hour meter and visual checks. For mining in Quebec or rentals in Ontario, replace proactively during annual maintenance to avoid $5,000+ in secondary damage.
Conclusion
Mastering **CAT 320 track roller replacement** with quality aftermarket parts like AFT's ensures maximum uptime and cost savings for your excavator fleet. Follow this guide, prioritize compatibility, and partner with trusted suppliers to keep your operations running smoothly across Canada.
Frequently Asked Questions
What is the bolt size for CAT 320 bottom rollers? 20*90mm bolts secure the rollers; torque to 450Nm for proper installation.
Are AFT Parts track rollers compatible with CAT 323D? Yes, they match specs for 323D, E200B, and 320 series for seamless replacement.
How long do CAT 320 track rollers last? 1,500-2,500 hours with proper maintenance; AFT Parts extends this via superior materials.
Where can I buy CAT 320 undercarriage parts in Canada? AFT Parts ships nationwide to provinces like Alberta, Ontario, and Quebec with expert support.
Visit AFT Parts today to explore compatible CAT 320 track rollers and get fast shipping across Canada with expert support for your excavator undercarriage needs.