Gosan Heavy Duty Crane Sheaves and Hoisting Components

Spanish Gosan welded wire rope sheaves: Series A single plate sheaves, Series B spoke pulleys, Series C heavy flange units, Series P large diameter sheaves, hook blocks and track wheels. Technical selection of components by nameplate.

Gosan Series A single disc welded rope sheaves

Cold formed Gosan Series A rope sheaves are engineered from structural steel plates for light and medium duty hoisting mechanisms. The groove contour is stamped with precision to ensure smooth wire rope travel and reduced throat wear under demanding repetitive operating duty cycles.

Groove geometry fitted for steel wire rope diameters ranging from 6 mm to 26 mm
External pulley diameter options spanning from 150 mm to 550 mm for compact booms
Base hardness 200-250 HB with specialized induction groove hardening up to 450 HB
Low temperature material resilience engineered for cold environments down to -45°C

Gosan Series B spoke welded rope sheaves

Gosan Series B welded rope sheaves incorporate variable section spokes with 30 degree angular offset to distribute radial forces evenly. The lightweight design lowers rotational inertia and structural dead weight without sacrificing rigidity during high frequency crane operations.

Balanced radial force distribution via even count of angled structural steel spokes
Pulley outer diameters from 400 mm to 1250 mm accommodating wire ropes 16 to 44 mm
Lowered moment of inertia relieves structural load on crane booms and assemblies
Heavy duty cylindrical and spherical roller bearings fitted with protective grease seals

Gosan Series C heavy duty convex flange rope sheaves

Heavy duty Gosan Series C rope sheaves feature dual convex reinforced flanges engineered to withstand peak starting torque and wire rope deflection angles. They are tailored for foundry, metallurgical and harbor cranes where utmost fatigue strength and reliability are required.

Reinforced dual convex flange rim profile prevents deformation under fleet angle pull
Engineered for wire ropes from 16 mm to 44 mm diameter in severe industrial hoisting
Pulley outer diameters 400 mm to 1250 mm with flame hardened groove up to 450 HB
High thermal tolerance built for demanding foundry environments and shipyard duty

Gosan Series P combined large diameter rope sheaves

Combined welded Gosan Series P rope sheaves are designed for offshore drilling rigs, pipe laying vessels and heavy floating crane barges. The groove profile is formed by two forged rim components welded to a central core, enabling custom diameters up to 1610 mm for thick cables.

Modular combined rim geometry for large pulley diameters from 580 mm up to 1610 mm
Accommodates heavy offshore wire ropes and hoisting cables from 10 mm to 48 mm
Available with lightweight spokes or solid reinforced diaphragms per project specification
Full compliance with DNV and API standards for offshore drilling and marine lifting

Gosan standard and motorized crane hook blocks

Gosan hook blocks and bottom tackle assemblies are produced with load ratings from 5 tons up to 850+ tons for overhead, shipyard and mobile cranes. Blocks integrate forged single or duplex hooks per DIN 15401/15402, rugged safety latches and optional motorized continuous swivel drives.

Lifting load capacities ranging from standard 5 tons up to heavy marine 850+ tons
Forged alloy steel hooks matching class P, S, T and V under DIN 15401/15402 rules
Equipped with Gosan rolled steel sheaves on heavy cylindrical roller bearing units
Optional electric motorized hook rotation drive for precision industrial load positioning

Gosan crane track wheels and drum drive couplings

Gosan industrial crane wheels are manufactured from forged 42CrMo4 alloy steel with deep induction heat treatment on tread and flange surfaces. Coupled with AGB series barrel drum couplings, they deliver smooth torque transmission while accommodating shaft misalignments.

Forged alloy steel 42CrMo4 featuring tread and flange surface hardening up to 450 HB
Double flanged, single flanged and flange free designs matching common crane rails
AGB series barrel couplings engineered to compensate angular and radial shaft offsets
Precision dynamic balancing reducing travel carriage vibrations on heavy runways

Inspection and wear monitoring protocol for Gosan wire rope sheave grooves

Regular gauge measurement of the working groove contour on Gosan welded wire rope sheaves prevents cable pinch and premature strand fatigue.

During scheduled crane maintenance inspections, technicians evaluate the remaining groove radius utilizing dedicated radius gauges at four diametrically opposed positions around the pulley circumference.

Maximum allowable groove depth wear resulting from abrasive friction should not exceed ten percent of nominal drawing specifications.

If groove corrugated wave deformation, metal galling or surface fatigue microcracks appear along the hardened steel surface, the sheave must be skimmed on a lathe or replaced as a complete assembly to maintain crane lifting safety margins.

Bearing assembly installation and axial clearance adjustment for Series A, B and C

Installing double row spherical or cylindrical roller bearings into the central hub of Gosan Series A, B and C welded sheaves requires precision induction heating tools rather than direct impact hammers.

Heating the bearing inner ring to one hundred ten degrees Celsius allows effortless slide fitting onto the shaft journal without galling precision seat tolerances. After assembly cooling, axial play is measured with dial test indicators and adjusted using calibrated steel shims.

Labyrinth hub seals are fully packed with heavy duty lithium complex grease to guard internal raceways against moisture ingress and industrial airborne debris.

Engineering selection and alignment rules for Series P combined welded sheaves

Large diameter Gosan Series P combined rope sheaves reaching up to 1610 mm outer diameter must be specified strictly by operating wire rope diameter and allowable fleet deflection angle on the hoisting drum.

When rigging the sheave into multi-fall boom tackle blocks, alignment specialists ensure that fleet angles between oncoming wire rope and groove center plane remain within one and a half degrees.

The combined welded rim construction with an internal stiffening diaphragm maintains high section modulus against alternating bending moments on offshore drilling barges. Retaining plates and axle lock pins are torqued with calibrated wrenches.

Structural maintenance and non-destructive examination of Gosan hook blocks

Comprehensive overhaul of Gosan heavy crane hook blocks rated up to 850 tons incorporates ultrasonic non-destructive testing of the forged hook shank.

Special attention is directed to the critical transition fillet between the cylindrical threaded stem and the curved hook saddle where peak fatigue tensile stresses concentrate under heavy load cycles.

The heavy thrust roller bearing mounted inside the crosshead trunnion is rotated manually under no-load conditions to verify smooth movement without notch stiffness. Spring actuated mechanical safety latches must snap back into closed position freely to prevent accidental sling release.

Alignment, runway tolerance check and lubrication for 42CrMo4 crane track wheels

Mounting Gosan industrial crane travel wheels forged from high strength 42CrMo4 alloy steel requires precision optical or laser alignment along the bridge end carriage beams.

Horizontal axle skew tolerances must be maintained within one tenth of a millimeter per meter of wheel gauge to prevent aggressive wheel flange rubbing and rail head gouging.

Deep induction hardening across the wheel tread and dual guide flanges ensures extended operating longevity on heavy duty workshop runways. Wheel bearing housing journals are replenished through external grease fittings every two hundred fifty operating hours with synthetic high load grease.

Dynamic inspection and backlash compensation of Gosan AGB drum barrel couplings

Gosan AGB series barrel drum couplings transmit high driving torque between gearbox output shafts and rope winding drums while absorbing structural bridge deflections. Spherical barrel rollers accommodate angular and axial misalignments caused by crane structural flexure under dynamic working loads.

Monthly preventative inspections involve checking torsional backlash between internal gear sleeve splines and measuring the physical condition of external oil seals.

Replenishing high viscosity extreme pressure gear grease inside the sealed coupling enclosure eliminates dry boundary friction and prevents premature tooth pitting.

Gosan and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Gosan and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.