Slow Speed Overhead Crane | QD 5–50/10 t Precision Hook Cranes

Slow Speed Overhead Cranes

QD slow-speed double-girder hook cranes for controlled lifting, installation and precise load placement. The series covers 5 t, 10 t, 16/3.2 t, 20/5 t, 32/5 t and 50/10 t configurations, with reduced main-hoist speeds from 1.62 to 2.31 m/min and standard spans from 10.5 to 31.5 m.

Capacity Structure

Complete QD Slow-Speed Overhead Crane Range

The QD slow-speed family is divided by capacity and hook arrangement. Smaller 5 t and 10 t cranes use a single main hook, while 16/3.2 t through 50/10 t configurations add an auxiliary hook for faster secondary lifting and positioning work.

QD 5–10 tSingle-hook precision lifting QD 16/3.2–20/5 tMain + auxiliary hook QD 32/5–50/10 tHeavy controlled lifting

QD 5–10 t

QD 5–10 t Slow-Speed Hook Bridge Crane

Slow-speed double-girder hook crane for precision placement of 5 t and 10 t loads. The QD series uses reduced hoisting speed with moderate trolley and bridge travel speeds, making it suitable where controlled vertical motion is more important than high lifting-cycle speed.

5 t / 10 tA31.95–2.04 m/min Hoist10.5–31.5 m

Technical Specifications

Rated Capacity	5 t / 10 t
Span	10.5–31.5 m
Maximum Lifting Height	16 m
Working Class	A3
5 t Hoisting Speed	1.95 m/min
10 t Hoisting Speed	2.04 m/min
5 t Trolley Travel Speed	18.24 m/min
10 t Trolley Travel Speed	18 m/min
Bridge Travel Speed	Approx. 42.3–44.9 m/min by span
Trolley Weight	2.4 t (5 t); 3.4 t (10 t)
Recommended Rail	P38 (5 t); P43 (10 t)
Power Supply	3-phase AC 380 V / 50 Hz

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QD 16/3.2–20/5 t

QD 16/3.2–20/5 t Slow-Speed Hook Bridge Crane

Main-and-auxiliary-hook slow-speed crane for medium-capacity installation, assembly and maintenance work. The main hook provides controlled low-speed lifting, while the auxiliary hook gives a faster secondary lifting function for lighter components and positioning tasks.

16/3.2–20/5 tA3Main + Auxiliary HookP43 / QU70

Technical Specifications

Rated Capacity	16/3.2 t / 20/5 t
Span	10.5–31.5 m
16/3.2 t Lifting Height	Main 16 m / Auxiliary 24 m
20/5 t Lifting Height	Main 12 m / Auxiliary 18 m
Working Class	A3
16/3.2 t Hoisting Speed	Main 2.23 m/min / Auxiliary 9.2 m/min
20/5 t Hoisting Speed	Main 2.31 m/min / Auxiliary 9.28 m/min
Trolley Travel Speed	18 m/min
Bridge Travel Speed	Approx. 40.8–42.3 m/min
Trolley Weight	5.8 t (16/3.2 t); 6.9 t (20/5 t)
Recommended Rail	P43 / QU70
Power Supply	3-phase AC 380 V / 50 Hz

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QD 32/5–50/10 t

QD 32/5–50/10 t Slow-Speed Hook Bridge Crane

Heavy slow-speed hook bridge crane for large machinery, heavy assembly and controlled installation work. The main hook operates at very low lifting speed, while the auxiliary hook handles lighter loads at a higher speed for setup, alignment and maintenance.

32/5–50/10 tA31.62–2.03 m/min Main HoistQU70–QU100

Technical Specifications

Rated Capacity	32/5 t / 50/10 t
Span	10.5–31.5 m
32/5 t Lifting Height	Main 16 m / Auxiliary 18 m
50/10 t Lifting Height	Main 12 m / Auxiliary 16 m
Working Class	A3
32/5 t Hoisting Speed	Main 2.03 m/min / Auxiliary 9.28 m/min
50/10 t Hoisting Speed	Main 1.62 m/min / Auxiliary 6.3 m/min
Trolley Travel Speed	19 m/min (32/5 t); 18.24 m/min (50/10 t)
Bridge Travel Speed	Approx. 40.8–48.1 m/min by span
Trolley Weight	10.0 t (32/5 t); 14.5 t (50/10 t)
Recommended Rail	QU70 (32/5 t); QU80 or QU100 (50/10 t)
Power Supply	3-phase AC 380 V / 50 Hz

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Crane Total Weight by Capacity and Span

Crane self-weight increases with span and capacity and should be checked together with runway design and building reactions during project planning.

Capacity	10.5 m	13.5 m	16.5 m	19.5 m	22.5 m	25.5 m	28.5 m	31.5 m	Rail
5 t	12.58	13.48	15.3	16.4	18.7	21.4	24.2	27.23	P38
10 t	14	15.8	18.5	19.54	21.66	24.62	27.3	30.65	P43
16/3.2 t	17.4	18.5	20.6	24	26.82	30.5	33	37	P43 / QU70
20/5 t	18.5	19.6	21.7	25.2	28.2	32.3	35.5	39	P43 / QU70
32/5 t	24.5	26.7	29.5	33.2	37.2	41	45.5	49	QU70
50/10 t	28.4	30.6	34.8	38.7	42.3	48.1	51.5	56.7	QU80 / QU100

Maximum Wheel Pressure by Capacity and Span

The values below are the maximum wheel pressures for the QD slow-speed series and are useful for preliminary runway-beam and rail selection.

Capacity	10.5 m	13.5 m	16.5 m	19.5 m	22.5 m	25.5 m	28.5 m	31.5 m	Rail
5 t	65	68	72	75	81	87	94	102	P38
10 t	102	109	118	123	130	142	151	160	P43
16/3.2 t	123	129	136	147	155	165	172	183	P43 / QU70
20/5 t	146	153	162	170	178	191	198	208	P43 / QU70
32/5 t	211	224	236	249	261	272	285	295	QU70
50/10 t	302	318	340	351	365	380	391	405	QU80 / QU100

Choose Slow-Speed Lifting by Handling Requirement

Precision Equipment Installation

Reduced hoisting speed supports controlled final positioning of machinery, molds, dies and large assemblies when vertical placement accuracy is more important than rapid lifting cycles.

Heavy Component Assembly

32/5 t and 50/10 t configurations combine a slow main hook with a faster auxiliary hook so heavy parts can be positioned carefully while lighter setup loads remain efficient.

Maintenance & Overhaul

Slow lifting is useful during equipment overhaul where components must be removed and returned through limited clearances or aligned with shafts, foundations and mounting points.

Long or Sensitive Loads

Lower vertical speed reduces abrupt load movement and gives the operator more time to control long, high-value or geometry-sensitive components.

Restricted Clearance

Where the load must approach equipment, platforms or structures closely, low-speed vertical movement improves control during final approach.

Process-Specific Positioning

For production processes requiring repeated controlled placement, modern controls can add VFD micro-speed, positioning feedback and anti-sway functions to the selected crane configuration.

When a Slow-Speed Crane Is the Better Choice

Selection Factor	Slow-Speed QD Crane	Standard General-Purpose QD Crane
Primary Objective	Controlled vertical movement and careful final positioning	Balanced productivity for general material handling
Main Hoist	slow-speed series uses 1.62–2.31 m/min main-hoist speeds	Selected according to general process and cycle requirements
Typical Load	Heavy machinery, equipment modules, molds, assemblies and maintenance loads	General workshop, manufacturing and warehouse loads
Auxiliary Hook	Available from 16/3.2 t upward for faster lighter-load work	Available on many conventional QD configurations
Control Upgrade	Can be paired with VFD micro-speed and precision positioning where required	VFD and automation can also be configured where the process requires them

Selection Factor

Slow-Speed QD Crane

Standard General-Purpose QD Crane

Primary Objective

Controlled vertical movement and careful final positioning

Balanced productivity for general material handling

Main Hoist

slow-speed series uses 1.62–2.31 m/min main-hoist speeds

Selected according to general process and cycle requirements

Typical Load

Heavy machinery, equipment modules, molds, assemblies and maintenance loads

General workshop, manufacturing and warehouse loads

Auxiliary Hook

Available from 16/3.2 t upward for faster lighter-load work

Available on many conventional QD configurations

Control Upgrade

Can be paired with VFD micro-speed and precision positioning where required

VFD and automation can also be configured where the process requires them

Control and Safety Configuration

VFD Micro-Speed

Variable-frequency control can provide smoother acceleration, deceleration and low-speed positioning beyond the fixed mechanical speed of the traditional QD slow-speed series.

Electronic Anti-Sway

Anti-sway control can reduce load oscillation during bridge and trolley travel when sensitive loads must be positioned accurately.

Overload Protection

Load-limiting and monitoring devices protect the hoisting mechanism and structure from operation above the selected rated capacity.

Upper / Lower Limits

Multiple lifting limits can protect the hook path during low-speed approach to the highest and lowest permitted positions.

PLC Positioning

PLC and position feedback can support repeatable transfer between defined workstations or assembly positions.

Remote Monitoring

Operating status, faults and maintenance data can be integrated into modern crane monitoring systems for production and maintenance management.

Slow Speed Overhead Cranes

Complete QD Slow-Speed Overhead Crane Range

QD 5–10 t Slow-Speed Hook Bridge Crane

QD 16/3.2–20/5 t Slow-Speed Hook Bridge Crane

QD 32/5–50/10 t Slow-Speed Hook Bridge Crane

Crane Total Weight by Capacity and Span

Maximum Wheel Pressure by Capacity and Span

Choose Slow-Speed Lifting by Handling Requirement

Precision Equipment Installation

Heavy Component Assembly

Maintenance & Overhaul

Long or Sensitive Loads

Restricted Clearance

Process-Specific Positioning

When a Slow-Speed Crane Is the Better Choice

Control and Safety Configuration

VFD Micro-Speed

Electronic Anti-Sway

Overload Protection

Upper / Lower Limits

PLC Positioning

Remote Monitoring

Request a Slow-Speed Overhead Crane Proposal