NormsEN 14439
Max. load capacity24.0 t (52910 lb)
Max. jib radius60.0 m (197')
Rope falls1 | 2
Hoisting gear:
Type2475 FU
Luffing gear:
Type760 FU
Operating currentA162
Peak currentA215
Supply line:
Cross Section Amm²70 | 95
Max. fuseA175
Max. length S2 + S3m256 | 347
Connected powerkVA134
min. required generator powerkVA268

Main Components
30 m (98′) basic jib. Extension up to 60 m (197′) in 5 m (16′) steps. Tower top with luffi ng gear. Slewing frame with slewing gear, electrical central lubrication and slipring system, operator’s cabin station with control cabinet. Counterjib with hoisting gear and counterweights.

Drive Technique

All drives frequency controlled squirrel cage motors, fully thermal protected. Hoisting winch Hw 2475 FU, hoisting gear with performance optimization and performance reduction option. Slewing gear with electrically operated weathervaning device. Automatic windforce compensation controls. Luffing winch Ew 1460 FU with switchable electronically controlled horizontal load path.

Electrical Equipment

Multivoltage equipment for supplies from 480 V Y / 277 V 60 Hz. Voltage monitoring, electronic safety crane controls with bus technology. Incremental absolute encoders for all operating movements. Electronic load measuring. Multilingual graphic display with touchscreen. Wind indicator and signal lights.

Safety Equipment

Electronic overload protection with WOLFFBoost. Increased load moment limitation due to automatic hoist speed reduction. Menu guided setting of overload protection system and of all limiters from operator’s cabin. Working space limiter. Anti-collision interface. WOLFFLink data transfer system, luffing gear with slack rope monitoring.

Tower Elements, Climbing Devices

Tower confi guration of WOLFF system tower elements. WOLFF slug bolt connection. Detachable hydraulic WOLFF system climbing device KWH 20.6.1 or KWH 23 or inner climbing device KSH 20 SH or KSH (E) 23.

Cross Frame KR, Mobile Cross Frame KRF

Cross Frames with 4.6 m (15′) to 10.0 m (33′). Cross frames KR can be converted to KRF. Mobile cross frame KRF with 6.0 m (20′) to 10.0 m (33′).

Power Requirements and Hook Paths (Slewing part)

134 kVA (Hw 2475 FU).
700 m (2296′) with one-fall operation
350 m (1148′) with two-fall operation

Datasheet WOLFF 275 B US (pdf)
CAD data WOLFF 275 B US (dwg)
WOLFF Boost (pdf)

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