Description

Hitachi Sumitomo SCX400 Technical Manual: Factory Specs You Can Trust

If you’re working on a Hitachi Sumitomo SCX400 Technical Manual crawler crane, you need the numbers straight from the manufacturer – not a third-party reprint that might have mis-typed a decimal. I’ve seen aftermarket copies that list the max lifting load at 40 tons but forget to say it’s metric tons. That gets a guy killed. This 15-page OEM spec book gives you the actual factory data: dimensions, working ranges, rated loads, engine output, track pressure. Everything a mechanic or operator needs before they lift a single pound. It’s thin, but every page pulls its weight.

Dimensions Specifications: Page 3 Data

Page 3 gives you the full layout of the SCX400 – overall length, width, height with crawlers retracted and extended, ground clearance, tail swing radius. The specs table lists maximum lifting load at 40 metric tons × 3.7 m radius, basic boom length 10 m, max boom 46 m. Wire rope speeds for main and auxiliary hoisting at 74 m/min (load-dependent). Travel speed is 2.0 km/h. Gradeability 22°. Ground pressure 63.8 kPa (0.65 kgf/cm²). Operating weight 42.8 tons with 10 m boom and 40 t hook. All numbers are from the factory, not guessed.

Technical Description: Engine and Hydraulic Specs

Page 4 covers the heart of the machine: Isuzu 4HK1X diesel. Water-cooled, 4-cycle, direct injection. Rated power 147 kW (200 PS) at 2100 rpm. Max torque 688 N·m (70 kgf·m) at 1500 rpm. Displacement 5.19 L. Fuel tank 300 L. Electrical system DC 24 V. This engine meets Stage/Tier 3 emissions. The manual doesn’t give you hydraulic pump flow rates – that would be in a service manual – but for a specs document, this is the data you need to verify power output and fuel capacity before a long job.

Rated Loads for Main Boom: Work from Exact Numbers

Section from page 9 (Rated Loads for Main Boom) gives you the load chart at different boom lengths and radii. If you’re rigging a lift, you don’t guess the load capacity. You refer to the factory chart. This manual includes those tables for boom lengths from 10 m up to 46 m. Also includes notes on jib construction and component weights for transport (page 10). You want to know how heavy that boom section is before you load it on a trailer? It’s in here.

Does This Manual Cover Clamshell and Dragline Configurations?

Yes – pages 12 and 13 cover Clamshell and Dragline dimensions and working ranges. The clamshell bucket specs, dragline bucket working ranges, and the bucket dimensions are listed. If you’re converting the crane to a dragline or clamshell setup, these pages give you the dimensional constraints so you know what fits. It’s not a full service manual, but it’s the baseline data you need.

Hitachi Sumitomo SCX400 Technical Manual: What’s Inside the 15 Pages

TECHNICAL DATA section on pages 14–15 lists standard equipment front attachments and a table of standard and optional equipment. You can verify if your crane came with the right hook block, boom sections, or auxiliary winch. The manual follows Japanese safety regulations (metric tons throughout), so be aware – the catalog states it’s not applicable to North America. That means the load charts are based on Japan’s crane standards. If you’re in the US, cross-check with your local OSHA requirements. But the mechanical specs – dimensions, engine, wire rope diameters – are universal.

Source Validity: OEM Factory Print, Not Aftermarket

This is a direct scan of the Hitachi Sumitomo printed specification catalog. It’s not a re-write or a compilation from multiple sources. The file name (HitachiSumitomo_SCX400_Technical_Manual_en-31113016297.pdf) confirms it’s the original English-language Asian issue. Third-party manuals often round metric tons to US tons, which throws off your load chart. This one uses metric tons as stated on page 2. For lifting equipment, using the wrong unit can kill you. Stick with the OEM data.

Who Needs This Spec Sheet

If you’re a crane operator checking your machine’s dimensions before transport, a mechanic verifying engine model and output, or a rental yard maintaining a fleet of SCX400 crawlers, this 15-page manual is your reference. It’s thin enough to keep in the cab or toolbox. Beginners should know this is not a repair manual – it won’t tell you how to rebuild the hydraulic pumps. But for understanding the machine’s capabilities and verifying it matches the manufacturer’s spec, it’s the only source you should trust.

Related Manuals You Might Need

Pair this technical manual with the service manual for deeper repair procedures. Check out the Hitachi Sumitomo SCX400 Specifications Manual”>full specifications manual for the same model. For other Hitachi Sumitomo crane and excavator models, see the Hitachi Sumitomo 330LC, 350H, 350LCH, 370MTH, ZX330 Technical Manual”>330LC/350H series technical manual or the Hitachi Sumitomo SH200-3 SH220-3 Technical Manual 166 Pages”>SH200-3/SH220-3 service manual.

For background on how crawler crane transmissions work, the Manual Transmission”>Wikipedia article on manual transmissions explains the basics. If you need to understand how the crane’s travel drive system engages, check Manual Transmission”>this manual transmission overview.

Frequently Asked Questions

Is this manual OEM or aftermarket?

It’s a factory technical manual from Hitachi Sumitomo, direct from the manufacturer.

Does this manual include torque specs for the crawler track tension?

The manual focuses on dimensional specs, working ranges, and load ratings. Torque specs for track tension are not listed in the 15 pages. For that, you’d need the separate service manual that covers track adjustment procedures and bolt torque values.

Can I use this manual for North American crane regulations?

No. The catalog explicitly states it is not applicable to North America. This manual follows Japanese safety regulations using metric tons. Verify against local OSHA/ANSI standards.

What models are covered?

Only the SCX400 hydraulic crawler crane.

Bottom line: you need the right data before you pick a load. This 15-page factory specs book gives you the hard numbers for the Hitachi Sumitomo SCX400. Access the Factory Manual now and keep it in your reference kit. One wrong load radius and you’re looking at a rollover – don’t gamble with reprints.