Un­der­ground in­ten­si­fier pump for mega and ca­ble bolts

DEMM Engineering & Manufacturing - - PRODUCT WATCH -

A new two-speed un­der­ground pump that can ten­sion mega and ca­ble bolts more than six times faster than con­ven­tional air pow­ered hy­draulic pumps is be­ing in­tro­duced to Aus­tralia and New Zealand by Cus­tom Min­ing Prod­ucts.

The new En­er­pac un­der­ground in­ten­si­fier pump – in­cor­po­rat­ing En­er­pac ZA4 pump com­po­nents proven glob­ally – is de­signed to rad­i­cally stream­line one of the most com­mon sub-sur­face con­struc­tion and main­te­nance tasks en­coun­tered in coal and min­er­als ex­trac­tion.

Based on the ex­pe­ri­ence of min­ing con­trac­tors who con­stantly un­der­take such tasks as es­tab­lish­ing roof struc­tures and shafts, the new pump, op­er­at­ing at 6,000 psi (414 bar) oil pres­sure, ten­sions bolts to 20-30 tons in 30-60 sec­onds us­ing as lit­tle as 60 psi (4 bar) pit air pres­sure.

The pump – which con­tains no ex­posed alu­minium com­po­nents and is de­signed for use in po­ten­tially ex­plo­sive at­mos­pheres – can ten­sion up to 60x 8m mega bolts an hour to swiftly se­cure roof and rib struc­tures.

The rapid ex­ten­sion of the cylin­der plunger on the pump’s fast speed en­ables it to be po­si­tioned quickly and pre­cisely, while the slower, high-power, stroke then brings to bear the force and re­li­a­bil­ity for which En­er­pac ZA4 pumps have been known for a decade. The ZA4 Se­ries pumps are ATEX 95 cer­ti­fied for use in po­ten­tially ex­plo­sive at­mos­pheres.

New En­er­pac un­der­ground in­ten­si­fier pump

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