Enerpac roll-frame press enhances safety while saving maintenance downtime

An Australian-designed hydraulic press solves the tricky maintenance challenge of getting awkwardly shaped heavy vehicle and conveyor components precisely positioned under a press so bearings and wear components can be safely and swiftly removed and replaced.

The Enerpac 700 bar roll-frame press – available in 50-200 ton capacities – can be used to service bulky components from tractors, trucks, bulldozers, dumpsters, earthmovers and static and mobile materials handling equipment that would otherwise have to be extensively manhandled in a time-consuming and potentially hazardous operation, which might also expose the component to damage.

Instead of having to haul components into place under a traditional press frame, operators of the IPR series roll-frame presses simply place workpieces on the press bed, roll the press’ mobile frame into position above them and lock it in place in the ideal position for work to commence.

Compared with traditional fixed frame presses, operators of the roll-frame types estimate they can save days of labour on major jobs, offer substantial cost-efficiencies to themselves and to customers as well as achieving their priority of safe working practices.

“We have installed these presses in some of the major heavy vehicle servicing facilities serving industries such as mining, oil and gas, civil engineering, heavy transport and public workshops. Their experience and feedback has been excellent,” said Enerpac Regional Manager Australia and New Zealand, Mr Tony Brooks.

Moving smoothly on bearings, it can be rolled aside while the workpiece is loaded onto the press bed. The hydraulic cylinder mounted on the cross-arm of the frame can also be moved from side-to-side to provide force precisely where it is needed.

The press’ maximum gap (daylight) f 1208mm and width (1222mm) is ample for the bulky items of mobile and static plant on which it is used.

One recent refitting workshop application – involving construction, resources industry other heavy equipment from around NSW – used the Enerpac equipment to precisely and powerfully press an extensive range of worn bearings out of their hubs.

“The workshop handles all drive components, beginning at the torque converter, through to clutches and differentials – all the way to the rear wheels – the operators do final drives and wheel groups, brakes, and everything to do with hydraulics, pumps, valves and hydraulic cylinders,” said Mr Brooks.

Before introducing the Enerpac press, the workshop’s old H-frame press could not handle the big jobs, he said. “Jobs didn’t fit well. We had to hoist parts up with a fork lift and a crane, which was not efficient and not ideal.”

Because optimum safety is a workplace priority, the customer involved reviewed Enerpac equipment being used for servicing by a major resources site where it was being employed on one of the largest types of dumpsters in the Cat range, the 790 series.

 “Working with the customer to fabricate a press exactly to their requirements, Enerpac built a press that immediately saved the company four days on a rebuild job, just because of that press,” said Mr Brooks.

“The old way of doing things involved a lot more setup, manipulation and hazard. Lacking the tooling they needed to press wheel bearings out of the hubs, the old practices just weren’t feasible in the longer-term.”

The Enerpac cylinders at the heart of the press are the globally proven R series, which are used by major industries and renowned for their reliability and backup through a nationwide service organisation.

They readily handle the heavy work and occasional machinery impacts involved.

The precision press helps users maintain OEM standards, while cutting costs through shorter downtime, says Mr Brooks. “One of the things customers like is that this very safe press is very simple in operation and doesn’t need any great knowledge to work it. It has a hand control and a pressure gauge, and the press rolls left and right, forwards and backwards.

“Accessibility into the press is great, because you can you can put the job on the bed and then bring the press to it, rather than having to haul the workpiece under the press. You can get easy access between the press bed and the head itself - it has very good accessibility and it’s user-friendly.”