CHAIN PULLEY BLOCK

ATLAS –1A

FRAME :

Rugged steel frame shaped to occupy minimum headroom, ensures permanent alignment of spindle and gears , encloses and protects the load chain wheel. Detachable steel cover protects the hand chain wheel and brake unit.

HOOKS :

Hooks are of forged alloy steel. Top hook swivels on balls housed in cross head. For chain hoist on single fall of chain, bottom hook rotates on balls housed in a cross head swivel. For chain hoist with 2 falls bottom hook rotates on balls housed in hook holder & is supported by bottom block frame.

SAFETY LATCH  :

 Every bottom hook is equipped with a safety latch – a safety latch for top hook is an optional attachment.

LOAD CHAIN WHEEL  :

Made from spheroidal graphite iron, has pockets accurately cast to receive calibrated load chain. Bottom  block wheel for chain hoist with two falls are fitted with needle rollers.

LOAD CHAIN  :

Alloy steel Grade 80 to International standards. All chain are electrically  resistance welded & heat treated to give ductility, toughness and wear resistance. Accurately calibrated, pitched and polished to ensure free movement. Each link is tested to twice the safe working load and can withstands shock loads.

GEARS  :

All gears are accurately machine cut from alloy steel and case hardened to ensure long life.

BEARINGS  :

Load wheel mounted on needle rollers housed in bush bearing thus reducing effort required for hoisting.

LOAD BRAKE  :

The precision self actuating screw disc type mechanical  brake engages instantly and provides uniform performance with rated capacity. When lowering, a load is under perfect control at all times, that is exceptionally valuable where accurately movement is demanded for spotting loads.

Ratchet wheels are hardened and surfaces ground to maintain parallelism, with adequate thickness to engage properly with pawl.

HAND CHAIN WHEEL  :

Hand chain wheel  havingbore with multistart threading and pockets accurately cast to receive calibrated calibrated hand chain. Hand chain wheel cover prevents chain from snagging and fouling.

LUBRICATION  :

Totally enclosed gear case is packed with sufficient grease during assembly.

TEST  :

Brad hand chain hoist are tested for 50% overload at works in support of which tested certificates are issued.