Hand Crank For Tubular Motor

Hand Crank for Tubular Motor by Futai supplier (also known as a manual clutch handle, emergency hand crank device, or crank handle) is a purely mechanical manual operation component used in conjunction with a tubular motor (or other types of electric drive devices). Its main function is to directly drive the motor's transmission mechanism (usually a worm gear and worm gearbox) by manually turning the crank when the motor is powered off, malfunctioning, or requires precise fine-tuning, thereby operating the load (such as curtains, roller shutters, awnings, etc.) to open or close.

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Product Description

The parameters of the Hand Crank For Tubular Motor mainly depend on the specifications of the motor it is paired with and the characteristics of the load.

Product Parameters

Physical parameters	Length	Refers to the length from the center of the joystick to the end of the handle. The longer the length, the more pronounced the lever effect, making operation easier, but it also requires more space to operate. Common lengths are 200mm, 300mm, 400mm, etc.
	Diameter	Refers to the interface size connected to the motor clutch. Common types include square shafts (such as 8x8mm, 10x10mm), round shafts (with a flat key or pin hole), hexagonal shafts, etc. It must fully match the clutch interface on the motor.
	Material	The main body is usually made of high-strength engineering plastics (lightweight and insulating) or metals (such as aluminum alloy or steel, which are strong and durable). The handle is coated with rubber to increase comfort and provide a non-slip grip.
Mechanical parameters	Max. Torque	Refers to the maximum effective torque that a person can generate when manually turning. This depends on the length of the lever and the human force.
Mechanical parameters	Gear ratio	This is not a parameter of the hand crank itself, but the transmission ratio of the gearbox matched with the motor. A high reduction ratio (such as 1:100) means that you need to turn many revolutions to move a short distance when cranking, but it requires very little effort.
Adaptation parameters	Compatible motor	This is the most important parameter. It must be clear what torque of motor this hand crank is suitable for.
Adaptation parameters	Install method	It is divided into built-in (integrated at the rear of the motor) and external (as a separate accessory, mounted on the wall or near the motor through a bracket).

Product Features and Applications

Hand Crank For Tubular Motor have following features
1.High reliability: As a purely mechanical device, it does not rely on electricity, electronic components, or wireless signals, so it can operate stably in any extreme environment (such as heavy rain, severe cold, or electromagnetic interference), making it the ultimate backup solution.

2.Simple and intuitive operation: There is no need to learn complex procedures; usually, you just need to switch the clutch to the 'manual' position and rotate the joystick clockwise or counterclockwise.
A3.bsolutely safe: During operation, the motor is either powered off or disengaged, eliminating any electrical action and avoiding the risk of misoperation or motor jamming.
Cost-effective: As a standard accessory, its manufacturing cost is relatively low, but it provides very high system safety and reliability.
5.Limitations:
Labor-intensive: For large or heavy loads (such as thick industrial roller doors), manual operation can be very strenuous and time-consuming.
Slow: Due to the gearbox, one manual turn may move the load only a few millimeters, making it unsuitable for situations that require quick response.
Requires on-site operation: The operator must be physically present at the equipment; remote manual control is not possible.

Applications

1.Building Shading and Curtain Systems
2.Doors, Windows, and Roller Shutter Systems
3.Agriculture and Greenhouses
4.Stage and Theater
5.Smart Home and Accessibility Facilities