SALT Track Groups & SALT Chain Assy
How Can You Recognise the Wear Patterns of Track Links?
- Bush diameter is one measurement that defines the wear factor, a specific measurement of the surface diameter defines when the chain is 100% worn out. This measurement varies between bulldozer types and sizes, please give us a call with this measurement and we can advise you the life percentage left in chain.
- Other measurement for wear is the rail height and it depends on the terrain and soil type as to which will wear first, the rail or bush. This measurement also varies between bulldozer types and sizes, please give us a call with this measurement and we can advise you the life percentage left in chain.
- Failure in loss of oil in links can occur in poor quality chains or if machine is fitted with over width shoes for working conditions. This must be repaired immediately, or links and segments will be destroyed quickly. If this occurs in more than one link it may be more cost effective to replace with new chains.
- Cracked bushes can also occur also found in poor quality chains or chains not tensioned correctly, the oil will be lost, and chains will be destroyed quickly. Replace chains.
- Recommended not to fit new chains on rollers over 50% worn as the wearing surface will not be matching. This will increase rail wear on new chains.
How Can I Increase Life of My Track Chains?
- Choose correct shoe width for soil conditions.
- Ensure correct undercarriage alignment is maintained.
- Maintain correct track tension refer to manual.
- Reduce travel speed where possible.
- Wear rates are increased by increased turning.
- Excessive reverse travel increases bush and sprocket wear.
Dozer Track Shoes
How to Recognise the Wear Patterns of Track Shoes and When to Change Them?
If the shoes on your bulldozer are bending or cracking, it maybe because they are too wide for the application or that they have worn out.
What Track Shoe Width Is for You?
We have track shoes available between 250-960mm
Feel free to give us a call to discuss what shoe size is best for you.
Track Rollers & Carrier Rollers (Top & Bottom Rollers)
How Can You Recognise the Wear Patterns of Top and Bottom Rollers?
- Top and Bottom rollers wear on the running surface which reduces the diameter of the roller, a specific measurement of the running surface diameter defines when the roller is 100% run out. This measurement varies between bulldozer types and sizes, please give us a call and we can provide what measurement is required based on your dozer.
- The flanges wear if you are doing a lot of hillside work and turning excessively. Can also be increased significantly if track guards are not fitted and maintained to the right tolerance.
- Flat spots on the rollers are caused by packing of material around roller preventing it from turning or seizing of bearing. Regular cleaning prevents packing. Replace roller as continual use will increase wear on rails.
How to Avoid Premature Failure on Bulldozer’s Bottom Rollers?
- Bottom rollers provide the undercarriage clearance height. The combination of the link height and the installation height of the bottom roller defines the undercarriage height increase. There is consequently no load on the front wheel, the sprocket and the final drive of the machine. When the chain links and the bottom rollers wear, the machine’s undercarriage will drop, so that the load is exerted on the front wheel, the sprocket and the drive motor. It is always recommended to replace idlers and bottom rollers as a set so that the machine weight is not carried by a singular roller as this will cause overload and premature failure which will void warranty.
- Regular cleaning of packed material around rollers.
- Minimise high speed and long traveling at any one time.
How Can You Recognise the Wear Patterns of the Idler?
- Track links wear on the idler running surface. A specified measurement from the centre rib to the running surface defines when the idler is 100% worn out. This measurement varies between bulldozer types and sizes, please give us a call and we can provide what measurement is required based on your dozer.
- If the sides of the grousers (centre rib) show signs of side wear, or the idler rubs against the side of the frame, then the track link is not in line with the idler. This may be caused by a cracked frame, worn mounting arms, worn slide in the frame, a broken axle, or a defective tension device. Excessive turning can also cause centre rib wear.
- If the bearing is defective and has lost oil, idler will need replacing immediately before there is further damage to any other components.
- Wear on the top of centre rib is caused by bush contact if excessive wear or soil compaction in frame behind idler.
Important Things to Consider When Replacing Sprocket Segments:
- With very worn rollers, fitting new sprockets will put extra weight on the drive motor causing vibration which will result in damage to the machine and sprockets. It is advised that you check your rollers to avoid this problem. Not apply to high drive machines.
- It is also recommended to fit with new sprocket bolts, grade 12.9 and torque to the Machines specifications. This is due to the fact that over time they can corrode and lose their retention resulting in damage to sprockets and the hub.
How Can You Recognise the Wear Patterns of Sprocket Segments?
- Chips or wear in outer corners of teeth are caused by high impact conditions, misalignment of chains or too high track tension.
- Another common wear pattern for sprockets and segments is the lateral wear. This is caused by (among others) worn chain guides, a twisted undercarriage, or poor guiding of the front idler. Can also be caused by the filtration of hard materials between the bushings and the sprockets, or by incorrect alignment.
- Sometimes the machine’s sprockets or segments are sharp, but the track links appear to be in reasonable condition. We are frequently asked whether the sprockets still need to be changed. The only reason why a sprocket becomes sharp is through the chain’s increased pitch. An increase in pitch creates more play between the pin and the bushing. As a result, the chain’s bushing no longer runs in line with the hollow part of the sprocket. This causes wear on the sprockets and the points become sharp. If replacing very worn sprockets without replacing the chains the bushes on the chain will load up the points of the teeth and will cause banging or jumping of the chain damaging the drive motors, sprockets, and chains. Same when replacing new chains always replace with new sprockets.
- You can get increased life from your chains if you replace the segments before the end of the chain life cycle; that way the undercarriage can be used for a few hundred more hours. Only recommended if the pitch has not been extended or still a fully sealed chain.