Machine Overview

The 125ALOGGER is a high-performance forestry machine engineered for superior maneuverability, low fuel consumption, reduced operating and maintenance costs, and robust reliability. It is optimized for off-road and forest terrain with low ground pressure.

Engine Specifications

• Model: Deutz F3L912, 3-cylinder inline, air-cooled with integrated blower fan
• Net Power: 33 kW; Maximum Torque: 163 Nm at 1600 rpm
• Rated Speed: 2150 rpm; Max Speed Limit: 2250 rpm; Idle Speed: 800 rpm
• Fuel System: Two-stage spin-on filtration with primary water separator and replaceable secondary filter
• Oil Capacity: 9 liters with spin-on paper microfilter full flow
• Air Filtration: Double cyclone box with paper element and visual restriction indicator; requires daily dust bowl emptying
• Exhaust: Mild steel silencer manifold with short lateral exhaust pipe
• Safety: Mechanical fan failure warning linked to injection pump stop

Powertrain and Transmission

• Engine/Transmission Coupling: Bell nylon-toothed coupling
• Drive Pumps: Eaton 78363 axial piston, closed loop, manual control via adjustment plate
• Hydrostatic Transmission: Closed circuit with Eaton 74318 radial piston wheel motors
• Transmission Model: Bosch Rexroth simple gear pump, 16 cc/rev, 34.4 L/min flow at rated speed
• Pressure Settings: Max 276 bars, auxiliary 17 bars
• Torque at Wheel: 10.34 kNm; Wheel Speed: 37.1 rpm at engine rated speed
• Transmission Reduction: Total reduction on drive wheel with Corner Power transmission

Hydraulic System

• Reservoir: Rear-mounted, separate from chassis, 120 liters capacity (130 liters total system)
• Oil Type: Rando HDZ 68 hydraulic fluid
• Operating Temperature: Max 90°C at 45°C ambient
• Pumps: Separate constant volume gear pumps, open center with full suction (5 microns) and return (20 microns) filtration
• Boom/Stick Pump: Eaton #26 gear pump, 29 cc/rev, 70 bars pressure
• Auxiliary Pump: Gear pump driven by PTO, 16 cc/rev, 34.4 L/min, 17 bars pressure

Chassis and Wheels

• Drive Wheels: Off-road 10-ply forest compound tires, size 18.4 x 26, rim 16 x 26 (single piece), inflation pressure 1.5 bar
• Rear Wheels: Low pressure 10-ply tires, size 400 x 15.5, rim 13 x 15.5 (single piece), inflation pressure 1.5 bar
• Ground Pressure (empty): Front 0.49 bar, Rear 0.80 bar
• Traction Effort: 30.647 kN machine traction force
• Road Speed: 9.4 km/h at engine regulation speed

Braking System

• Service Brake: Hydrostatic closed circuit with wheel braking
• Parking Brake: Spring-applied, hydraulically released multi-disc wet brake

Grapple and Boom

• Grapple: Bell Series 35 with 0.35 m² capacity
• Boom: Standard telescopic boom fully integrated into tubular structure

Fuel System

• Fuel Tank: Rear-mounted, separate from chassis, 76 liters capacity
• Fuel Filtration: Primary spin-on water separator and secondary spin-on filter

Electrical and Control Systems

• Voltage: 12 V system
• Steering: Hydraulic slip steering on front axle controlled by pedal
• Cabin: Integral steel structure without doors, heavy-duty windshield and hood protection, rear engine bays
• Safety Features: Two offset locking devices to prevent accidental seat plate overturning; low-profile padded seat with lap belt
• Warning Lights: Engine oil pressure switch activates at 0.25 ± 0.1 bar

Weights and Load Capacities

• Operating Weight: 4800 kg total
• Front Axle Empty Weight: 3380 kg; Rear Axle Empty Weight: 1420 kg
• Wheelbase: 2458 mm (short wheelbase)
• Front Axle Load: 2790 kg
• Overturn Load in Extension: 1251 kg
• Safe Working Load (SWL): 850 kg
• Nominal Payload Capacity (CMU): 5195 kg total, with 455 kg front load and 5650 kg rear load

Dimensions and Clearances

• Maximum Clearance: 4800 mm (15'9") with #35 grapple and 18.4/15 x 30 tires
• Overall Length: 3900 mm (12'10")
• Width: 1935 mm (6'4")
• Height: 2580 mm (8'6")
• Wheelbase: 2550 mm (8'4")

Key Advantages

• Excellent maneuverability and off-road performance
• Low fuel consumption and operating costs
• Robust, simple, and reliable design
• Low ground pressure suitable for forestry applications

Additional Notes

Specifications and product concepts are subject to change without notice as part of continuous improvement. Photographs may show optional equipment. Contact information for Bell International sales offices is available for various regions.