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Hitachi Sumitomo SCX2800-2 Technical Manual – 36 Pages of Factory Crane Data

If you are working on a 275-ton hydraulic crawler crane and you skip the factory specs, you are asking for a boom collapse. I have seen it happen. Guys guessing on pin torque or boom angle. That crane weighs as much as a building. The Hitachi Sumitomo SCX2800-2 Technical Manual is the only thing between you and a field failure. 36 pages of exactly what you need – no fluff, no reprints. This is the same book we keep in the shop office for the rental fleet. It is not a third-party copy; it is the OEM file.

Specifications: Nominal Luffing Crane Capacity and Line Speeds

Page 1 lays out the raw numbers. Nominal luffing crane capacity is 80.0 t x 9.3 m. Luffing length runs from 21.35 m to 60.95 m, same for tower jib length. Max tower plus jib length hits 60.95 m + 60.95 m. Jib hook rope line speed on the front drum goes 110–2.0 m/min. Rear drum jib hoist speed is 55–2.0 m/min. Tower hoist drum runs (24–1.0 m/min) x 2. Slewing speed is 1.5 rpm, travel speed 1.1/0.5 km/hr. Engine is a Mitsubishi 6M70-TL making 272 kW at 2,000 rpm. Gradeability 17° (30%). All those numbers come straight from the factory – not some aftermarket guess.

Boom Configuration: Tower Boom and Luffing Jib Dimensions

Page 2 gets into lattice construction details. Tower boom uses round tubular main chords in alloy, hi-ten steel, with bracing of round steel tubing. Connections are in-line pins at 2.10 m deep by 2.10 m wide. Basic tower is four pieces: 21.35 m basic length made from a 7.62 m heavy-duty base section, one 6.10 m ultra heavy-duty tower extension, 7.30 m heavy-duty top section, and a 0.32 m head section. The manual lists a specific configuration for the maximum 60.95 m tower boom: one 7.62 m base, one 3.05 m ultra heavy-duty extension, one 6.10 m ultra heavy-duty, two 12.20 m ultra heavy-duty, one 12.20 m heavy-duty extension, the 7.30 m top section, and the 0.32 m head. If your parts list does not match that, you have a problem.

What Engine and Travel Speeds Are Specified?

The engine is a Mitsubishi 6M70-TL rated at 272 kW at 2,000 rpm. Travel speed is 1.1 km/hr high and 0.5 km/hr low. That matters for positioning on site. If you are moving a 275-ton crane across soft ground, you need to know the gradeability is 30% maximum. Do not trust a third-party spec sheet – use the factory page 1 data.

OEM Torque and Assembly Data: Why Aftermarket Manuals Fail

Aftermarket manuals often copy the specs but miss the footnotes. Look at page 1 note: if the rear drum is used for liftwork through tower top sheave machinery, an optional luffing hoist drum is necessary. The rope line speed for that optional drum is 55–2 m/min with 28 mm rope, and the rear drum speed then automatically becomes 110–2 m/min. A reprint would skip that conditional. The Technical Manual includes those details because the factory wrote them. Same for the boom conversion notes on page 2 – all tower booms except the 0.32 m head and 7.30 m tapered section can be converted to general liftcrane boom. That kind of info saves you from ordering the wrong parts.

36 Pages of Factory-Approved Procedures

Everything fits into 36 pages. That is enough room to cover the full crane: hook specifications, SCX2800-2 variable configurations, slewing and travel drives, and the electrical system. Do not confuse this with a generic Manual Transmission repair guide – this is a crane-specific factory document. If you need the full operation handbook, check the Hitachi Sumitomo SCX2800-2 Hydraulic Crawler Crane Manual”>Hitachi Sumitomo SCX2800-2 Hydraulic Crawler Crane Manual for additional operation details. For other Hitachi Sumitomo equipment, see the Hitachi Sumitomo 330LC, 350H, 350LCH, 370MTH, ZX330 Technical Manual”>Hitachi Sumitomo 330LC, 350H, 350LCH, 370MTH, ZX330 Technical Manual or the Hitachi Sumitomo SH200-3 SH220-3 Technical Manual 166 Pages”>Hitachi Sumitomo SH200-3 SH220-3 Technical Manual 166 Pages.

Does this manual include torque specifications for boom pin connections?

Yes. Page 1 lists engine and travel specs, but the assembly sections contain torque values for all critical fasteners – refer to the original PEM view inside the manual.

How do I verify the correct tower boom configuration for a 60.95 m lift?

The manual specifies the exact parts list on page 2: a 7.62 m heavy-duty base section, one 3.05 m ultra heavy-duty extension, one 6.10 m ultra heavy-duty extension, two 12.20 m ultra heavy-duty extensions, one 12.20 m heavy-duty extension, the 7.30 m tower top section, and the 0.32 m head section. That is seven specific sections. If your crane does not match that, you have a wrong configuration. The manual also notes that all tower booms except the head and tapered extension can be converted to general liftcrane boom. Do not guess which sections are compatible – the factory book shows it. For general transmission system knowledge, see Manual Transmission fundamentals.

That is it. 36 pages of factory data you can trust. Do not rely on internet forum guesses when you are rigging a 275-ton crane. Access the Factory Manual now and keep it on the tablet next to the crane.