1. Specifications

The CKS800 Hydraulic Crawler Crane is powered by a HINO J08E-VM 6-cylinder turbocharged engine compliant with NRMM Stage IIIA / US EPA Tier 3, delivering 213 kW at 2100 rpm and 1017 N·m torque at 1600 rpm. It has a 400-liter fuel tank. The hydraulic system features three variable displacement piston pumps with max relief pressures of 31.9 MPa (load hoist, boom hoist, propel) and 27.5 MPa (swing), with a 440-liter hydraulic tank.

The boom hoisting uses a hydraulic motor with planetary reducer and multiple-disc brakes; load hoisting employs front and rear drums powered by hydraulic plunger motors with spring-set brakes. Wire ropes are 22 mm diameter, with 220 m (main) and 130 m (auxiliary) lengths. The swing system offers 360° rotation at 4.0 rpm via hydraulic motor and planetary reducer.

The upper structure is torsion-free with a 27.2-ton counterweight. The cab is fully enclosed with safety glass, air conditioning, and operator comforts. The lower structure includes hydraulically extendable crawlers (800 mm shoes), independent hydraulic propel drives, and spring-set parking brakes. Maximum gradeability is 40%.

2. Dimensions and Boom/Jib Arrangements

The maximum boom length is 54.9 m, constructed with high-tensile steel lattice chords. Fixed jib combinations include 42.7 m + 18.3 m and 45.7 m + 12.2 m. Boom inserts come in 3.0 m, 6.1 m, and 9.1 m lengths; jib sections are 3.0 m and 6.1 m. Boom backstops are mandatory for all boom lengths. Crawler width is hydraulically extendable/retractable for transport and operation.

3. Working Ranges

Working range charts detail height vs. radius for various boom lengths and jib offsets (10° and 30°). The crane operates with boom lengths from 9.1 m to 54.9 m, supporting flexible lifting with variable swing radius and height.

4. Supplemental Data and Operational Guidelines

• Load ratings comply with EN13000 standards.
• Operating radius is measured horizontally from rotation center to load center of gravity.
• Load ratings exclude hook blocks, slings, and accessories weight.
• Operation assumes firm, level surfaces with gradients up to 1%.
• Environmental factors (wind, ground conditions, boom angle) require operator adjustments to loads and speeds.
• Minimum rated load is 1.1 tons.
• Crawler frames must be fully extended during operation.
• For boom lengths ≥54.9 m, erection blocks must be placed under front crawlers.
• Counterweight options: standard 27.2-ton or optional 26.1-ton self-removal device; lifting capacity unchanged.

5. Lifting Capacities

Maximum lifting capacity is 80 tons at 3.0 m radius with boom fully extended to 54.9 m. Detailed tables specify safe load limits by boom length, radius, and reeving lines. Fixed jib max lifting capacity is 7.0 tons at 20.0 m radius; jib offset angles affect limits.

6. Transportation and Attachments

Transport weight approx. 39,850 kg including base machine, boom base, gantry, crawlers, and wire ropes. Crawler width retractable for transport. Attachments include boom/jib sections, hooks, and optional equipment like positive free fall brakes.

Critical Parameters and Best Practices

• Operate strictly within rated load limits to maintain safety and warranty.
• Install boom backstops for all boom lengths.
• Use gantry in raised position during all operations.
• Keep crawler frames fully extended during lifting.
• Deduct hook and rigging weights from lifting capacities.
• Follow manufacturer instructions for boom/jib assembly and guy line installation.
• Adjust loads and speeds based on environmental and site conditions.

Crane Specifications and Weights

Underweight: 27.2 metric tons; carbody weight: 6.5 metric tons. All weights in metric tons.

Key Notes on Lifting Capacities

• Ratings per EN13000; based on freely suspended loads without allowances for wind or ground conditions.
• Rated loads limited to 66% of minimum tipping loads.
• Operation only on firm, level surfaces with ≤1% gradient.
• No operation approved where ratings are absent for certain radii or boom lengths.
• Mandatory boom backstops and gantry raised during operation.
• Boom erection must be over front crawlers; crawler frames fully extended.

Clamshell Bucket Lifting

• Total lifted load includes bucket, slings, accessories; must be deducted from main boom ratings.
• Bucket capacity = bucket volume × material specific gravity + bucket weight.
• Avoid rapid acceleration/deceleration during simultaneous boom and swing operations.
• Prohibited: casting bucket while swinging or diagonal draw-cutting.

Hoist Loads and Hook Blocks

• Main hoist max loads vary by reeving parts: 7.0 t (1 part) up to 80.0 t (10 parts).
• Auxiliary hoist max load: 7.0 t (1 part).
• Hook block weights range from 0.16 t (7.0 t capacity) to 0.8 t (80 t capacity).

Counterweights

• Standard: 22.8 t (excluding carbody weight).
• Optional: 17.7 t with self-removal device.
• Lifting capacity unaffected by counterweight type.

Operational Guidelines and Safety Notes

• Operating radius defined as horizontal distance from rotation centerline to load center of gravity.
• Deduct weights of buckets, slings, hook blocks from rated capacities.
• Adjust loads for environmental and operational factors.
• Rated loads limited to 66% of minimum tipping load for stability.
• Operate on firm, level surfaces with ≤1% gradient.
• Boom erection over front crawlers; crawler frames fully extended.
• Mandatory boom backstops and proper boom inserts/guy lines arrangement.
• Prohibit rapid acceleration/deceleration during simultaneous boom and swing.
• Exceeding rated loads or ignoring instructions voids warranty.

Special Conditions for Barge Operations

• Ratings based on max machine inclination: 1.5° side-to-side, 3.0° front-to-back.
• Operations limited to inshore, smooth water; offshore/open sea not approved.
• Machine must be securely fastened to barge deck.
• Towing limited to coastal areas with quiet waves; counterweights may require reduction.
• Japanese construction codes and safety ordinances apply; international shipping class regulations do not.

Summary of Rating Charts

Multiple rating charts cover fixed jib lifting, clamshell bucket lifting, reduced weight ratings, and barge operations. Charts specify lifting capacities by boom length, radius, reeving, and hoist loads. Operators must consult cabin charts for precise values and comply with all safety guidelines.

Overview of Base Machine Configurations and Weights

• Configurations include combinations of gantry, crawler, wire ropes, boom base, and side steps.
• Weights range from ~23,520 kg (minimal configuration) to ~39,850 kg (full configuration).
• Base machine width with boom base, gantry, crawler, and wire ropes is 3,500 mm.

Transportation Plan

• Transport dimensions and weights detailed, including side step effects on width (3,170 mm with side step on cabin side; 3,340 mm with side steps both sides).
• Component weights and dimensions assist transport logistics planning.

Parts and Attachments

• Individual weights provided for key parts: backstop (245 kg), counterweights (1,660–9,320 kg), self-removal unit (860 kg), carbody (3,270 kg), jib components (125–190 kg), crawler (7,180 kg), boom components (311–1,110 kg), hooks (400–800 kg), auxiliary sheaves and spreaders (150–280 kg).

Notes and Disclaimers

• Catalog may show optional equipment not certified in all countries; consult KOBELCO for regional compliance.
• Specifications subject to change without notice due to product improvements.
• Copyright and contact info for KOBELCO CRANES CO., LTD. included.

Critical Recommendations

• Consider component weights and dimensions carefully for transport and assembly compliance.
• Optional counterweights and self-removal units significantly impact total weight and handling.
• Confirm equipment suitability and certification with KOBELCO for your region.