Overview

This document details the technical specifications, performance metrics, safety features, and optional equipment for Hyundai's 7-Series electric battery forklifts, specifically models 35B-7, 40B-7, 45B-7, and 50B-7. These forklifts are designed for seated operation with load capacities ranging from 3,500 kg to 4,990 kg.

1. Dimension Specifications

• Load capacities span from 3,500 kg (35B-7) to 4,990 kg (50B-7).
• All models have a consistent load center distance of 500 mm.
• Wheelbase varies between 1,855 mm and 2,000 mm depending on the model.
• Fork dimensions typically range in width from 122 mm to 150 mm and lengths up to 1,970 mm.
• Overall forklift lengths range from approximately 3,847 mm to 4,445 mm, with widths around 1,370 mm.

2. Performance Data

• Maximum travel speed is 18 km/h, both loaded and unloaded.
• Lift speeds range from approximately 380 to 500 mm/sec, while lowering speeds are about 500 to 550 mm/sec.
• Drawbar pull force is between 28,000 and 29,000 N depending on model and load.
• Gradeability varies from 24% (model 50B-7) up to 32% (model 35B-7).
• Drive motors are dual 8.1 kW AC motors.
• Battery systems operate at 80V nominal voltage with capacities around 600-700 Ah.

3. Weights and Axle Loads

• Service weights range from 6,415 kg (35B-7) to 7,520 kg (50B-7).
• Front axle loads under full load can reach up to 11,213 kg.
• Unloaded axle loads are balanced to optimize stability and performance.

4. Tires and Wheels

• Tire options include solid rubber (V), superelastic (SE), pneumatic (P), and polyurethane (PE).
• Front tire sizes are typically 250-15 or 28 x 12.5-15; rear tires are generally 21 x 8-9.
• Wheel configuration consists of two driven front wheels and two rear wheels.
• Track widths are approximately 1,090-1,166 mm front and about 1,370 mm rear.

5. Mast and Fork Specifications

• Mast tilt angles are 6° forward and 10° backward.
• Available mast types include 2-stage limited free lift and 3-stage full free lift.
• Maximum fork heights reach up to 6,030 mm for models 35/40/45B-7 and 5,962 mm for 50B-7.
• Load capacities at a 500 mm load center range from 3,300 kg to 4,990 kg depending on mast and model.

6. Safety and Control Features

• Operator Presence Sensing System (OPSS) disables mast and drive controls when the operator is not seated.
• Maintenance-free wet disc brakes are enclosed to protect against dust and water.
• Fully hydrostatic power steering provides smooth control and prevents kick-back.
• Down-control and down-safety valves ensure controlled lowering and prevent fork drops during hydraulic failure.
• ZAPI anti-rollback system enhances safety on ramps and during ramp starts.
• Parking brake is a ratchet type requiring minimal operator effort.

7. AC Control System and Motor Technology

• High-frequency (8 kHz) ZAPI controller enables smooth operation, fault protection, and regenerative braking.
• AC motors offer approximately 10% higher efficiency compared to traditional DC motors.
• Multiple performance modes are available: High (H), Normal (N), Economic (E), and Turtle mode (limited to 10 km/h).

8. Operator Comfort and Ergonomics

• Adjustable steering wheel and ergonomic operator compartment enhance comfort and productivity.
• Easy-to-use control direction lever for forward/reverse operation.
• Multi-functional switch lever controls lights and horn.
• Optimally positioned accelerator and brake pedals with non-slip mats.
• Adjustable suspension seat with optional seat belt, armrest, and hip restraint.
• Self-diagnostic LCD monitor with backlight displays system status, errors, battery level, and performance mode.

9. Maintenance and Serviceability

• Battery compartment swings up with gas-spring assistance for easy replacement.
• Robust overhead guard exceeds EEC and ANSI safety standards.
• ORFS (O-Ring Face Seal) hoses prevent hydraulic oil leaks.
• Accessible fuse box and hydraulic oil level check port simplify maintenance.
• High visibility headlights and rear work lights improve operational safety.
• Battery locking system ensures secure installation.

10. Optional Equipment and Attachments

• Mast options include 2-stage and 3-stage limited free lift variants.
• Attachments available: side shift, hinged forks, bucket, rotating forks, push-pull, roll clamp, carton clamp, pallet inverter, drum clamp, bale clamp, load extender, fork positioner, and load stabilizer.
• Additional options: overshoes, internal piping, hose reels, beacons (amber, red, blue), rear work lights, cold storage tires, pneumatic and non-marking tires.

Summary

The Hyundai 7-Series electric forklifts integrate advanced AC motor technology, ergonomic design, and comprehensive safety features to provide efficient, reliable, and comfortable material handling solutions. Their modular mast and attachment options allow customization for diverse operational requirements. Maintenance-friendly design minimizes downtime, making these forklifts suitable for a wide range of industrial applications requiring load capacities from 3.5 to 5 tons.

Additional Dimension Data

• Component dimension sets are provided, indicating standard cross-sectional profiles (150 mm width x 50 mm height) with varying lengths from 1,220 mm up to 1,970 mm.
• Two main groups of dimensions are noted: one with fixed 50 x 50 profiles and another labeled for model 50B-7 with multiple length options.
• This data likely supports component selection or manufacturing specifications related to structural or mechanical parts.