At a glance data:
Overview
The Weiler K660 Knuckleboom Loader is the largest and most powerful in the Weiler lineup, purpose-built for the most demanding logging and mill yard applications. It features a high-capacity hydraulic system that delivers fast, precise, and efficient boom movements for high-volume loading operations. The reinforced upper frame, extra heavy-duty swing system, and robust boom structure provide superior strength and long-term durability in extreme working conditions. The spacious, climate-controlled cab offers outstanding operator comfort with excellent visibility, intuitive joystick controls, and an ergonomic layout designed to reduce fatigue and maximize productivity during extended shifts. Maintenance is fast and efficient with wide-opening service doors, centralized grease points, and ground-level access to key systems, minimizing downtime and lowering operating costs. With unmatched swing torque, exceptional lift capacity, and rock-solid stability, the K660 is engineered to deliver top-tier performance where it matters most.
Category:
Knuckleboom Loaders
Brand:
General Specifications
Standard Equipment
powertrain
- Cat® C7.1 engine certified to EPA Stage 5
- Primary and secondary fuel filters, including water separator
- Electric fuel priming and transfer pump
- 2-Stage engine air cleaner
- Oversized cooling system
- Engine auto idle down
hydraulics
- Excavator style “negacon” pump control system
- Variable displacement pumps
- High performance, multi-functioning main control valve
- Mechanical cold oil bypass
- Bar saw slasher ready
- In-line return
- Electric hydraulic oil fill pump
operator environment
- Enclosed cab with swing out front window guard meeting SAE J2267
- Dual pilot joystick control with foot pedal swing
- Reverse slope tinted windshield and skylight with sunshade
- Two cup holders
- High capacity HVAC system
- Air suspension high back seat
- AM/FM/Bluetooth Radio
- 24V to 12V converter and 2 x 12V power port
- Windshield wiper
- All down stabilizer controls
- Integrated trailer hydraulic landing gear control
- Weiler machine software
- Adjustable operator controls
electrical
- 100 ampere alternator
- 24-volt electrical system with 2 12-volt batteries
- Main disconnect switch with Diesel Exhaust Fluid (DEF) purge indicator light
- 6 LED working lights & 1 engine compartment service light
- 4 circuit electric swivel
other standard equipment
- Extreme-duty delimbing boom and stick
- Heavy-duty, extended length center mount sub-frame
- Flat top sub-frame deck with bolt-on skid resistant fenders
- Bolt-on sub-frame ladder
- 12" (305 mm) grapple mounting knuckle
- S·O·S sampling ports
- Ecology drains (engine oil, DEF, hyd tank)
optional equipment
- 32’ 6” Boom & Stick (9.9 m)
- 32’ 6” Grapple Saw Ready Boom & Stick (9.9 m)
- Single “V” or Double “V” heels
- 50' Crawler Trailer w/ Hydraulic Landing Gear and 426 Delimber
- Hydraulics & Controls for 3rd Party Delimber and Trailer
- 4548 Straight Narrow Jaw Grapple (2 Port or 3 Port Swivel)
- 4548 Tapered Wedge Jaw Grapple (2 Port or 3 Port Swivel)
- 5055 Straight Narrow Jaw Grapple (2 Port or 3 Port Swivel)
- 5055 Tapered Wedge Jaw Grapple (2 Port or 3 Port Swivel)
- Premium Heated & Cooled Seat
- CB Radio
- Weld-on Trailer Plating
- Weld-on Trailer Plating w/ Saw Buck Stop
- Product Link (PL243 Cellular or PL631 Satellite)
- Additional Ladders
- Vacuum Pump
- Slasher Hydraulics Adapters (JIC to o-ring face seal)
- Slasher Hydraulics Adapters w/ Shut Off Valves (JIC to o-ring face seal)
- Fire Extinguisher
- 35” Grapple Saw
sales and service
- Sold and serviced exclusively through Weiler Forestry dealers worldwide
warranty
- 12 months standard, extended warranty available
Optional Equipment
Similar Products
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Weiler K760 Knuckleboom Loader
