Oil Chains (SALT):
Most bulldozer owners opt for SALT (Sealed and Lubricated Track) chains. These chains incorporate a unique design feature using pins with internal reservoirs of oil. This oil flows through radial holes in the pins and fills the annular space between the pin and bushing. Seals within the chain links effectively retain the oil. As long as these seals remain intact, the oil continuously lubricates the interaction between the pin and bushing, reducing wear as the pin rotates within the bushing during machine operation.
Dry Chains:
In contrast, dry chains, sometimes referred to as "greased" chains, are assembled with heavy grease applied between the pin and bushing. However, the seals in dry chains are typically less effective than those in SALT chains. Over time, these seals may deteriorate, causing grease leakage and allowing wear to occur between the pin and bushing. The wear process in greased chains typically begins after approximately 2,500 hours of operation.
Cost Considerations:
Dry chains are generally more cost-effective upfront, costing about 15% less than SALT chains. This cost-saving feature often tempts machine owners looking to reduce initial expenses. However, it's essential to consider the long-term consequences. The accelerated wear and tear on dry chains can result in higher maintenance and replacement costs down the road, ultimately making them a less economical choice in the long term.
Aftermarket Chains:
Many aftermarket companies offer both dry and SALT chains. Choosing aftermarket chains can yield substantial savings, often up to 50% less than what original equipment dealers like CAT, John Deere, Komatsu, Kobelco, Volvo, and others charge. Importantly, the quality of aftermarket chains is comparable to that of the dealer's products, making them a smart investment for savvy machine owners.
In conclusion, the choice between SALT (oil) chains and dry chains should align with your machine's specific requirements and your cost considerations. While dry chains may appear more budget-friendly initially, it's essential to factor in the long-term costs associated with wear and replacement. Opting for high-quality aftermarket chains can provide significant savings without compromising on performance or durability.
