Crawler excavator - Bergmann Maschinenbau - #3

The hydraulic gear-driven swing is powered by an axial piston motor with shockless valve that is flange-connected to a planetary reduction unit. It rotates 360°continuously on the single row-ball bearing that has an integral,internally cut swing gear, and is totally enclosed to prevent the ingress of mud and water.

Brake .......................A hydraulic brake that locks automatically

when the swing control lever is in the neutral position and a mechanical parking brake applied when the swing control lever at the neutral position, pulling the safety lock lever backwards or engine stop

Lubrication...................Completely housed and grease bathed

Max. swing speed ....................................13.5 min^-1 (13.5 rpm)

Tail swing radius........................................................2,750 mm

Min. front swing radius ..............................................3,460 mm

The boom and arm are of all-welded, steel box section type with reinforced pin joints. Bucket is fabricated from high tensile

strength steel.

Boom cylinders............................................Two, double acting

Bore & Stroke...........................................125 mm x 1,315 mm

Arm cylinder................................................One, double acting

Bore & Stroke..........................................135 mm x 1,630 mm

Bucket cylinder ...........................................One, double acting

Bore & Stroke..........................................120 mm x 1,090 mm

Lubrication .............................Grease nipples, with centralized

greasing for remote points Bucket digging force..................................138 kN (14,072 kgf)

(High power)............................................145 kN (14,785 kgf)

Arm digging force......................................130 kN (13,256 kgf)

(High power).............................................136 kN (13,868 kgf)

( * High power can be used with STD arm only)

Fuel tank...........................................................................320 l

Cooling system ...................................................................23 l

Engine oil............................................................................23 l

Track drives.....................................................................2 x 5 l

Swing drive ...........................................................................5 l

Hydraulic oil tank

(level) ..............................................................................165 l

(system)..........................................................................260 l

In standard figure, with the 1.90m arm, 600 mm grouser shoes and 0.8 m³ ISO, bucket.

Operating weight ..................................19,700 kg : HD820Effl

Ground pressure ....................................44.1 kPa : HD820Effl

Unit : mm

o

CD 00 CM

o

CTI

o

600

*Less grouser bar