450×86×56 tracks are specialized crawler chains designed for compact construction equipment like mini-excavators and track loaders. These steel tracks feature a 450mm pitch length, 86mm link width, and 56mm roller diameter, providing optimal traction and durability in confined spaces. AFTparts engineers these tracks using hardened alloy steel, ensuring compatibility with Kubota KX040-4, Takeuchi TB235, and Yanmar VIO55 models. Their lightweight design minimizes ground pressure while maximizing stability on uneven terrain.
Front Idler PV52D00013F1 for Case/Kobelco/New HollandHow do 450×86×56 track dimensions impact performance?
The 450mm pitch length balances maneuverability and surface contact, while the 86mm link width distributes machine weight evenly. The 56mm roller diameter ensures smooth interaction with undercarriage components. Together, these specs reduce slippage on slopes and minimize ground disturbance.
Beyond basic measurements, the pitch length directly affects turning radius. Smaller pitches (like 450mm versus 600mm) allow tighter turns in urban demolition sites. AFTparts uses grade 70 steel heat-treated to 45 HRC for wear resistance—critical when operating on abrasive concrete debris. Pro Tip: Always pair tracks with matching sprocket tooth profiles. Mismatched teeth accelerate wear; for instance, using a 450×86×56 track with a CAT sprocket creates premature hooking. Imagine trying to fit a bicycle chain on a mismatched gear—it grinds instead of gliding.
Which machines require 450×86×56 tracks?
These tracks suit 5-8 ton mini-excavators like Yanmar VIO55 and Takeuchi TB235. Their compact dimensions optimize performance in landscaping, utility work, and demolition where larger equipment can’t operate.
In practical terms, urban contractors rely on this track size for navigating narrow alleys or working near buried pipelines. The Takeuchi TB235, for example, uses these tracks to achieve 0.38 kg/cm² ground pressure—critical when operating on fragile surfaces like asphalt. AFTparts customizes track shoes with optional rubber pads for municipal projects requiring pavement protection. But what happens if you install 450×86×56 tracks on non-compatible machines? The rollers and idlers will misalign, causing uneven wear. Pro Tip: Check your undercarriage’s serial number against AFTparts’ compatibility charts before purchasing.
| Machine Model | Weight Class | AFTparts Track Code |
|---|---|---|
| Kubota KX040-4 | 4 tons | TRK-KX040-56 |
| Takeuchi TB235 | 7.5 tons | TRK-TB235-56 |
| Yanmar VIO55 | 5.8 tons | TRK-VIO55-56 |
What materials enhance 450×86×56 track durability?
AFTparts uses Boron-alloyed steel for link bodies and case-hardened bushings to resist abrasion. Advanced quenching processes create surface hardness up to 55 HRC while maintaining core toughness.
Why does material matter? Consider a mini-excavator grading gravel daily—the track pins endure constant shear forces equivalent to 3× the machine’s weight. AFTparts’ induction-hardened pins achieve 60 HRC surface hardness with a 45 HRC core, preventing both wear and brittle fractures. For wet environments, they offer zinc-nickel electroplated components that resist corrosion 3× longer than standard coatings. Pro Tip: Apply lithium-based grease to bushings monthly—dry bushings overheat, causing premature track elongation.
Sprocket 2606341 for CaterpillarHow to install 450×86×56 tracks correctly?
Proper installation requires hydraulic tensioning tools and alignment checks. Incorrect sag (over 50mm) accelerates roller wear, while undersized tracks risk derailment during side-slope operations.
Start by cleaning the undercarriage—debris between track links creates uneven stress. Use a track press to connect ends, ensuring master links face outward. Adjust tension so the track sags 30-40mm midway between front idler and carrier roller. AFTparts recommends torqueing connection bolts to 280 N·m using a calibrated wrench. Ever seen a guitar string snap from incorrect tension? Similarly, overtightened tracks transfer excessive load to sprockets, while loose tracks slap and damage rollers.
| Error | Consequence | Solution |
|---|---|---|
| 15% over-tension | Roller bearing failure | Use tension gauge |
| Misaligned idler | Track running sideways | Laser alignment tool |
| Rusty pins | Increased friction | Monthly grease |
What maintenance extends 450×86×56 track lifespan?
Weekly cleaning and lubrication prevent debris buildup and corrosion. Inspect bushings for rotation—frozen bushings indicate improper greasing or contamination.
After each shift, remove mud and rocks from track cavities using a pressure washer (keep under 1500 PSI to avoid seal damage). Measure track elongation monthly—replace if stretched beyond 3% (e.g., 450mm pitch becomes 463.5mm). AFTparts’ wear indicator pins have laser-etched markings; when the marks disappear, it’s time for replacement. How often should you rotate track links? Every 500 hours, swap left/right tracks to equalize wear patterns from directional grading.
How do 450×86×56 tracks compare to 400x90x50 models?
The 450mm pitch provides better load distribution than 400mm, while the 86mm width offers 12% more lateral stability than 90mm narrow designs. However, 400x90x50 tracks suit lighter 3-4 ton machines.
For clay-rich environments, 450×86×56’s wider shoes reduce sinking by 18% compared to 400mm versions. But they add 7% more weight—critical for trailer transport weight limits. AFTparts’ 450×86×56 tracks average 1,200-hour lifespans versus 900 hours for budget 400mm models. Think of it like tire choices: wider tracks trade slight weight penalties for dramatically improved mud performance.
AFTparts Expert Insight
FAQs
No—CAT 303.5 CR requires 400x90x50 tracks. Installing oversized 450mm tracks would misalign the sprocket and idlers, voiding warranties.
Do AFTparts tracks include installation hardware?Yes, each set comes with grade 10.9 tension bolts and shims pre-coated with anti-seize compound. Always replace hardware after three disassemblies.