Caterpillar Performance Handbook, January 2017, SEBD0351-47

Rock Straight System Specifications ● Hard Rock Roof Support HRS1220

Hard Rock

20

Hard Rock Roof Support HRS1220

D

E

C

B

A

F

A Height Closed B Height Extended

1060 mm 2150 mm 1750 mm 4240 mm 1500 mm 1300 mm

41.73" 84.64" 68.90" 166.93" 59.05" 51.18"

C Canopy Width (includes side seals)

D Main Canopy Length E Swivel Canopy Length

F Base Width DA Ram Stroke

625 mm

24.60"

Leg Centers Distance (vertical to face)

1440/1660 mm

56.69"/65.35"

Bearing Surface Base

35 360 cm2

38.061 ft2

Distance Roof Support Centers

1750 mm

68.90"

Support Resistance (at height 1600 mm/ 62.99" ) Setting Load at 320 bar (4641 psi)

2209 kN 2599 kN

320.38 psi 376.95 psi

Yield Load at 415 bar (6019 psi) Load at the End of Swivel Canopy

100 kN

14.50 psi

Weight

9.3 tonnes

10.25 tons

Edition 47 20-29