TCM FB30-8 - STEERING SYSTEM (EPS Type); General Description

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6B. STEERING SYSTEM (EPS type)
Truck model
Item
FB10-8 FB15-8
FB18-8
FB20-8
FB25-8LB
FB25-8
FB25-8V
FB30-8
FB30-8V
FB35-8S
Steering system
Type Rear wheel steering, electric power steering
Steering gear
Type Ball nut type
Name PU41
Reduction ratio 18.9
Operating angle 92°
Worm returning angle Left
Handwheel dia. 360 mm [14.2 in.]
Actuator
Type Motor-driven, ball nut type
Rated voltage of motor 48 V
←
72 V
Rated output of motor 350 W 550 W
←
Stroke 235 mm [9.3 in.]
← ←
Controller
Type Voltage controlling type
Rated voltage 48 V
←
72 V
Current limit Max. ±40 A Max. ±45 A
←
Rear axle
Type Elliot type
← ←
Steering angle
(Inner wheel) 85.8° 83.5°
←
(Outer wheel) 55.6° 56.4°
←
King pin spacing 735 mm [28.9 in.] 740 mm [29.1 in.]
←
King pin tilt 0°
← ←
Camber 0° 1°
←
Caster 0
← ←
Toe-in 0
← ←
Trail 0
← ←
Wheel
Tire size 16 x 6 – 8 10PR 18 x 7 – 8 14PR
←
Rim size 4.25 x DT
← ←
Ination pressure
850 kPa {8.5 kgf/cm
2
}
[120.9 psi]
900 kPa {9.0 kgf/cm
2
}
[128.0 psi]
←
6B.1 GENERAL DESCRIPTION
The steering system consists of a steering gear, actuator, controller, and axle. The steering
wheel operating force is boosted by the motor-driven actuator.
6B. STEERING SYSTEM (EPS type)