Diamond Mowers’ new rooftop cooler increases operating longevity

Diamond Mowers' rooftop cooler on a bobcat CTL

The new SK rooftop cooler from Diamond Mowers is engineered to minimize the risk of hydraulic overheating when mowing and mulching.

As the latest addition to the company’s line of skid-steer attachments and accessories, the cooler is compatible with select Bobcat R Series and John Deere models. 

The specialized cooling system easily mounts to the roof of skid-steers and CTLs to enhance performance, efficiency and operating longevity. 

With a heat rejection capability of 140,000 BTUs per hour, the cooling system dissipates heat, enabling the carrier to maintain optimum hydraulic temperatures under heavy workloads and in challenging environmental conditions. 

“Mowing and mulching applications are among the most demanding on a hydraulic system, with high loads accompanying high heat,” said Dan Stachel, Executive Vice President of Diamond Mowers. 

“If this heat is not dispersed effectively, it can lead to fluid degradation, reduced performance, overheating and even equipment failure — all of which can negatively impact productivity. To help keep operators up and running, we built a solution that ensures optimal cooling performance and extends the life of expensive hydraulic components like valves, pumps, and motors.”

Diamond’s rooftop cooler weighs 118 kg and comes with mounting brackets that enable a secure installation to the cab without the need for drilling or welding. Keeping the system cool are two, 30-cm auto-reversing electric fans, which allow oil to quickly reach its optimal temperature before turning on and circulating air to prevent overheating. 

A heavy-duty, laser cut lid promotes adequate airflow and protects internal components from branches and debris. Gas struts feature an automatic safety catch and support the weight of the lid while a removable debris screen slides out for easy cleaning and maintenance to further improve airflow and cooling performance.

“This system works by using a fan to draw air through a cooler, which cools hydraulic fluid as it passes through,” Stachel said. “The cooled oil is then recirculated back into the system to ensure the equipment remains operating within an optimal temperature range.”

Diamond Mowers’ new rooftop cooler can be purchased individually or as part of a forestry package combined with command couplers and a safety glass kit. 

Command couplers create a strong connection that delivers superior resistance to repeated pulling and pushing of hydraulic lines and eliminates the need for hydraulic coupler replacements. The safety glass kit includes protective shields made of 127-mm thick polycarbonate materials that resist impact and deflect debris.

 “Our complete forestry package sets a new standard in equipment performance and user safety by providing a solution that not only enhances cooling efficiency, but also improves attachment performance and operator protection,” Stachel said.