Description

New Holland Kobelco CK550 Technical Manual – Factory Specifications for the Hydraulic Crawler Crane

I’ve pulled wrenches on everything from half-ton pickups to 50-ton cranes. When you’re working on a New Holland Kobelco CK550 Technical Manual, you don’t guess at capacities. You look up the factory spec. That’s where this 20-page Technical Manual earns its place on the bench. It’s not a full rebuild guide – it’s the reference you grab when you need a verified number for lift charts, engine data, or hoist speeds. Page 1 gives you the max lifting capacity – 55 US tons at 10.5 ft. That number isn’t for decoration; it’s the law for rigging. Page 3 lists the engine specs: Mitsubishi 6D151, 153 hp at 2,500 rpm. If you’re setting up a CK550 on a jobsite, this is your source.

What a 20-Page Technical Manual Tells You

Twenty pages sounds short. On a crane as complex as the CK550, it’s enough to pack the critical specs: boom lengths, line speeds, drum capacities, and engine torque. The document covers the upper machinery layout from page 2, the power plant details, the boom hoist and load hoist systems. You get the wire rope diameters – 5/8 inch for the boom hoist, 3/4 inch for the load hoist. You also get the fuel tank capacity: 74 US gallons. That’s data you can’t pull from a generic manual.

Page 1: Lifting Capacity and Boom Specs

Page 1 states max lift of 55 US tons at 10.5 ft radius. Max total length (boom+jib) is 190 ft, max boom alone is 160 ft. Those numbers determine crane setup and load charts. Kobe Steel, Ltd. printed them – not a third-party reprint house. If you’re planning a lift, you verify these figures against your configuration. Without the factory sheet, you’re guessing. That’s why this 20-page manual stays in the cab.

Page 3: Mitsubishi 6D151 Engine Data

Page 3 gives the full power train: 6-cylinder, water-cooled, direct fuel injection with turbocharger. Bore and stroke are 4.4″ x 4.5″. Displacement is 422 cubic inches. Max power 153 hp SAE net at 2,500 rpm. Rated torque 418 ft-lb at 1,600 rpm. Starter is 24V, 4.5 kW; generator 24V, 80 amp. Two 12V batteries in series, 150 A-hr each. That’s the level of detail you won’t find in an aftermarket summary. If you need to order a replacement starter, you quote these numbers.

Boom Hoist and Load Hoist: Factory Numbers

The boom hoist runs through an axial piston motor and planetary gearbox. Spring-set, hydraulically released multiple-disc brake. Line speed on first layer: 223 ft/min both hoisting and lowering. The load hoist uses two tandem drums with independent axial piston motors. Clutches are internally expanding band clutches. Brakes include brake valves and externally contracting band brakes. Wire rope length per drum: 558 ft of 3/4″ line. Every spec is on the page – no guesswork. For deeper coverage on larger cranes, check the New Holland Kobelco CKE1350 CK1600 2004 Technical Manual”>New Holland Kobelco CKE1350 CK1600 2004 Technical Manual for higher capacity machines. If you work on excavator-style systems, the New Holland Kobelco SK75 SK500 Technical Manual – Factory Specs”>New Holland Kobelco SK75 SK500 Technical Manual – Factory Specs covers similar hydraulic layouts. The KOBELCO CKE1800-1F Hydraulic Crawler Crane Manual”>KOBELCO CKE1800-1F Hydraulic Crawler Crane Manual gives more detail on boom geometry.

Why OEM Documentation Beats Aftermarket Reprints

Aftermarket manuals copy specs from unknown sources. They might round a dimension or transpose a decimal. On a crane, that margin becomes a safety hazard. This PDF is scanned from the original Kobe Steel print. It’s not redrawn, not rephrased. The pages show the original tables and layout. If you’re comparing this to a $10 access from a no-name site, ask yourself: does that site have the factory torque values? (It doesn’t.) For the CK550, this manual is the only source for verified numbers. To understand the mechanical principles behind the planetary gearboxes, a Manual Transmission”>Manual Transmission resource helps. If you’re unfamiliar with hydraulic axial piston motors, review a Manual Transmission”>Manual Transmission primer on power transfer – the same concepts apply.

FAQ

Can I use this manual for the CK550’s electrical system?

No. This manual has no wiring diagrams – it’s a spec sheet, not a service manual.

What’s the difference between this technical manual and a full service manual?

A full service manual covers disassembly, assembly, troubleshooting, and repair procedures. This 20-page technical manual contains only the factory specifications: dimensions, engine specs, capacities, and lifting charts. It’s what you grab when you need a verified number – not when you’re tearing down the swing motor. If you’re planning a rebuild, look for the shop manual. This one is for reference and setup.

That 20-page count isn’t a weakness. It’s focus. When you need the OEM numbers for a New Holland Kobelco CK550, this technical manual gives you exactly what the factory stamped. Access the Factory Manual and keep it with the machine.