20-27T Long Reach Excavator Booms For CAT KOMATSU HITACHI SANY

long reach boom arm PC200 CAT320 ZX200 SK200 SY312 long boom arm for DOOSAN HYUNDAI KOMATSU KOBELCO

The video show of dipper arm extension

Product advantage of long excavator boom and arm:

01 Use Q355B material,
02 Adopts precision steel pipeline
03 Adopt alloy copper sleeve big arm base
04 Two layers groove welded to ensure
05 Double quality inspection before leaving
06 The tolerance of position size within 1 mm
07 Angle of boom and arm can reach 163°

The specification of excavator boom stick

Our Long Reach Booms Sticks fit most makes and models, Include but not limit below models.
Komatsu Excavator Model: PC160LC-8, PC200, PC210, PC228, PC220 PC270, PC300, PC350, PC450, PC600, PC850, PC1250
Caterpillar Excavator Model: CAT320, CAT323, CAT326, CAT329, CAT330, CAT335, CAT336, CAT349, CAT352, CAT374, CAT390
Hitachi Excavator Model: ZX210, EX200, EX220, EX330, EX350, ZX200, ZX240, ZX330, EX350, EX400, ZX470, ZX670, ZX870, EX1200, EX1900
Volvo Excavator Model: EC220, EC235, EC250, EC300, EC350, EC355, EC380, EC480, EC750
Doosan Excavator Model: DX225, DX235, DX255, DX300, DX350, DX420, DX490, DX530, DX800
Kobelco Excavator Model: SK200, SK210, SK220, SK250, SK260, SK300, SK330, SK350, SK380, SK460, SK500, SK850
Sumitomo Excavator Model:?SH210, SH225, SH240, SH300, SH330, SH350, SH460, SH480, SH500, SH700, SH800
Hyundai Excavator Model: R200, R210, R220, R290, HX220, HX235, HX260, HX300, HX330, HX380, HX430, HX480, HX520, R1200

Introduce of excavator long arm

The extended arm is generally made of Q345B steel, with good strength and rigidity. The shaft sleeve is generally made of 45#+20# steel, with 40Cr bushing, coupled with lubricating butter, which greatly reduces the shear force produced by the shaft and sleeve in frequent rotation, thus increasing the service life of the shaft sleeve. The extended arm is generally a box-type structure, that is, the upper and lower two cover plates and the left and right two wall panels. The internal buffer bars must be welded, and the buffer bars must be opened with elliptical holes, so as to better release the stress generated by the extended arm during welding and work, and avoid its damage to the extended arm.

The pictures of excavator long arm for caterpillar

Esteblished in 2018, Kaiping Zhonghe Machinery Manufacturing Co., Ltd., a manufacturing and trading combo, specializes in customizing different kinds of excavator boom arms and attachments