The ER boom system provides tighter tuck, increased envelope and more below grade capability. Through-tip routing offers better protection of the hoses leading to the felling head. Three-mode ER provides the operator with a wide range of boom control options.
The side opening engine roof completely exposes the top and both sides of the engine, and most hydraulic components. When open, the enclosure roof serves as a spacious side service platform to work comfortably and safely.
Durable, forest duty undercarriage with long track frames for excellent stability. Closed loop track drives for high performance and efficiency. Sloping tail for additional swing clearance.
| LENGTH less boom | 5 590 mm |
| WIDTH with steps | 3 390 mm |
| HEIGHT | 3 390 mm |
| GROUND CLEARANCE | 710 mm |
| WEIGHT less attachment | 33 900 kg |
| TAIL SWING RADIUS | 3 150 mm |
| ENGINE Tier 4f | Tigercat FPT C87 Tier 4f, 260 kW (350 hp) @ 1,950 rpm (rated) |
| AIR FILTRATION | Precleaner and 2-stage engine air cleaner |
| COOLING | Aluminum side-by-side radiator, oil cooler, charge air cooler, A/C condenser Removable intake debris screen |
| FAN | Hydraulically driven, automatic variable speed, reversible |
| FUEL CAPACITY | 850 L |
| DEF CAPACITY | 80 L |
| LOW RANGE | 2,0 km/h |
| HIGH RANGE | 4,8 km/h |
| PUMP, MAIN | Piston |
| PUMP, SAW | Piston |
| PUMP, FAN | Piston |
| PUMP, TRACK | (2) Piston, closed loop |
| PUMP, CLAMP/ACCUM. | Piston |
| PUMP, CHARGE/PILOT | Gear |
| FILTRATION, MAIN HYDRAULICS | (2) In-tank, 10 micron full flow |
| FILTRATION, CHARGE/PILOT | (2) Spin-on, 6 micron full flow |
| CYLINDER, HOIST | (2) 120 mm (4.7 in) bore |
| CYLINDERS, STICK/ER | (2) 110 mm (4.3 in) bore |
| CYLINDER, TILT | 130 mm (5.1 in) bore |
| HORSEPOWER CONTROL | Electronic speed sensing All-speed antistall |
| RESERVOIR | 295 L |
| TRACK FRAMES | R7-150 Super-duty forestry, integral track guides, ramp angles |
| TRACK CHAIN | FH400 215 mm (8.5 in) pitch |
| FINAL DRIVE | (2) Axial piston motors, infinitely variable speed |
| TRACTIVE EFFORT | 347 kN |
| GEARBOX | Triple reduction planetary type with brake |
| FRONT IDLER | Hydraulic track adjuster Spring shock absorber |
| ROLLERS, LOWER | (10) FH400 excavator type |
| SLIDES, UPPER | Bolt-on |
| TRACK SHOE | 610 mm (24 in) single grouser |
| Optional | 710 mm (28 in) single grouser 610 mm (24 in) double grouser 710 mm (28 in) double grouser |
ER technology allows the operator to actuate the boom with optimal hydraulic efficiency. Extend and retract on a horizontal plane quickly and smoothly with a single joystick.
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Onsite access to production and service information. Using a mobile device and a secure WiFi hotspot, users can easily access detailed machine data and diagnostic tools at the worksite with LogOn.
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Off site access to telematics. Be connected to your forestry operation from almost anywhere – all you need is RemoteLog, and a device with internet connectivity.
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First production X877 feller buncher is put through its paces in central Canada.
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10 February 2026
Daryl Westerveld, product engineer for tracked harvesting systems, takes us on a walk-around of the 857 and 877 carriers. The sloped tail represents a reimagining of what a steep-slope carrier should look like. The result is a machine with increased leveling capability and greater chain clearance in winch-assisted applications, while maintaining the class leading stability of Tigercat machines. Watch this video to learn about the key features and benefits of owning an 857 and 877 carrier.
21 April 2025
With the exception of forwarders and harvesters, all current 2025 Tigercat models are equipped with a common operator’s seat. In this video, to help you get the best performance from the seat, we are going to take you through the adjustments and point out some differences specific to certain machine models.
