Barrel Construction:
Forged SAE 4140 steel
Induction-hardened inner surface (HRC 52-55)
Honed finish (Ra 0.2-0.4μm)
Rod Assembly:
SAE 4340 steel core
Hard chrome plating (0.1-0.12mm) + optional HVOF coating
Superfinish (Ra 0.1μm)
Sealing System:
Primary: Polyurethane U-cups with PTFE backup
Secondary: Tandem wiper system
Wiper: Triple-lip metal-reinforced design
This 1U-4851 lift cylinder is used for D7H D7R dozer.
TRACK-TYPE TRACTOR
D7H
BULLDOZER
7SU 7S 7S LGP
WINCH
57H
9T-3885
5J-5402
1M-1571
3G-8742
1U-4823
4J-6167
1D-4615
2J-3506
8J-2880
3J-6572
1U-4826
9T-4761
8C-3840
5J-0964
8C-3839
1H-8128
2K-6830
3G-8746
1F-6762
8T-566
