STB Big Bag

Lifting Bulky Loads Without Obstruction

The STB Big Bag version, a special variant of the STD dual chain hoist, is designed for safe working loads up to 3,200 kg. Its special features are the freely selectable distance between chain hoist and load hook as well as lifting of bulky loads up to the highest hook position without obstructing edges such as trolley, chain hoist or chain box getting in the way.

The chain hoists are also available in explosion-proof design for Zone 1, Zone 21 and Zone 22.

Freely selectable distance to load hook
Lifting to the highest hook position without obstruction
Low headroom for low buildings
Safe working load to 3,200 kg
Based on the popular STD dual chain hoist and tried-and-tested ST series
Optionally available in explosion-proof design

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The special design of the Big Bag chain hoists allows lifting of lifting beams without obstructing edges getting in the way.

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The short headroom trolley with extended rope lead-off is available for safe working loads of 500 kg to 3,200 kg.

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Thanks to the freely selectable distance between chain hoist and loak hook, STB chain hoists also lift bulky loads up to the highest hook position.

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Models

The different models and trolley variants allow not only a wide variety of uses, but also very individualised solutions tailored to specific requirements.

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STB Big Bag design

The Big Bag version is designed for load capacities up to 3,200 kg. Its special feature is the free choice of the distance between chain hoist and load hook which makes lifting bulky loads or Big Bags up to top hook position possible without hindering edges such as trolley, chain hoist or chain box.

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Technology

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The ST chain hoist programme boasts superior technology. The low-maintenance components of the modular chain hoist are optimally matched to each other. They guarantee constant performance, long service life and high efficiency.

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Motor

High ISO classification according to FEM/ISO standards
Powerful motors with high duty cycle and number of switching operations
Standard fan cooling
Single-speed and frequency-controlled versions available as options
Optional temperature control by thermistor

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Brake

Low-maintenance, asbestos-free electromagnetic disc brake
Oversized braking torque
Long service life, brake pad status can be checked and measured
Brake completely enclosed, protected from humidity, vapours and dusts from the exterior; ensuring long-term reliable operation

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Chain drive

Innovative patented chain drive
Anchorage and load-bearing components are directly integrated into the high-tensile grey cast iron
Simple inspection and replacement of the chain sprocket thanks to over-mounted shaft bearing
Enclosed chain guide
Reliable functioning even in demanding applications
Wear-resistant case-hardened chain sprocket in conjunction with optimised return sheaves; ensuring low wear on the chain

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Standard control

All customary connecting and control voltages are available
Plug connection of control pendant and travel motor
Clear arrangement of contactors
As an option, available with direct control
As an option, available without control pendant and/or contactor control

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Paint

Standard paint treatment as per RAL 6018 yellow-green and RAL 7021 greyish black
High-quality primer and top coats for standard applications
Off-standard paint treatment for outdoor use or corrosive ambient conditions
Other colours per RAL chart optionally available

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Overload slipping clutch and gear

The slipping clutch of the ST 10 to ST 60 is located in the oil bath.
Easily adjustable from the exterior
Precise response
No electronic limiting necessary
Various gear reductions available
Oversized helically geared gearbox

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Chain

Surface-hardened, galvanised and large dimensioned load chain
High case depth for long service life
High ISO classification according to FEM/ISO standards
Stainless steel or blackened manganesephosphated load chains are available as option

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WChain box

Large selection of chain boxes in plastic, sheet steel, textile or stainless steel
Available without chain box as an option

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Options and features

Although they are already first-class in their standard design, you can make the hoists even safer, more economical and more convenient with a range of mechanical, electrical and electronic options. They simultaneously improve performance, prolong service life and make it possible to adapt the hoist individually to specific requirements.

Here are some of the options frequently used.

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Control pendant

Robust control pendant with EMERGENCY STOP palm button and control cable
All switching elements for hoist, cross, and long travel are 2-step
IP65 protection
Additional buttons, such as horn activation, can be easily fitted

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Radio remote control units

Flex-Wave pushbutton unit with protective cover and carry strap
VUE pushbutton units with feedback display
MLTX2 joystick transmitter with controller and carry strap
Optional battery chargers with standard rechargeable batteries
Robust, fibre-reinforced plastic housing, IP66 protection
Frequency ranges 433, 863 or 2,400 kHz
Also available in explosion-proof version
Other radio remote control units optionally available on request

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SMC Multicontroller

Continuous load monitoring by overload cut-off even if hoist is idling
Overload protection with ALC automatic load control
Load spectrum memory for load-related operating time summation
Operating data registration, e.g. operating hours, load spectrum, motor switching operations and load cycles
Data exchange with PC possible

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Travel limit switch

Travel limit switch on crab available as option
Limiting for both directions of travel
Switchover from “fast/slow” (predisconnect)
Switch contacts designed for control current
IP66 protection

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Operational hoist limit switch

Two versions are possible: cut-off in top hook position or cut-off in top and bottom hook position (stationary, push trolley, electric trolley)
Activated by the bottom hook block

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Gear-type limit switch

Various functions possible: e. g. routine operational cut-off in highest or lowest hook position or switching from “fast” to “slow” before the stops
IP55 protection, optionally IP66

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Spring-steel chain guide

Heavy high-tensile chain guide for rugged use
Enclosed chain guide
Extremely wear-resistant case-hardened chain sprocket

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Bypass brake

Second brake for increased safety
Identically dimensioned
Second brake acts in force transmission directly on the load, i. e. bypassed the slipping clutch
As an alternative to the bypass brake, a second hoist motor brake is available

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Write your caption hereLoad display

SLD four-digit 7-segment load display, large format, luminous red
Available with various interfaces including CAN
Choice of 100 or 150 mm digit height
Combinable with the hoist’s overload sensor and the SMC multicontroller available as an option, no additional fixtures or load attachment devices are required, the headroom of the hoist remains unchanged

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FMD1 slipping clutch test device

Robust full metal design
Modern electronic test apparatus with field-proven sensor technology, high degree of accuracy ± 2 %
Test range up to 4,000 kg on one chain fall, suitable for chains up to 11.3 mm link thickness
Optionally available for STD and STK
Protector for evaluation device and internal test program
Simple intuitive handling

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