China factory select size 30-600mm, tape Z17A keyless shaft hub locking device shrink disc with high quality best sales price

China factory select size 30-600mm, tape Z17A keyless shaft hub locking device shrink disc with high quality best sales price

our items are selling nicely in the American, European, South American and Asian markets. a specialised supplier of a complete variety of chains, sprockets, gears, equipment racks, V-belts, couplings and reducers, pto shaft, agricultural gearboxes….


Fast Specifics

Relevant Industries:

Developing Substance Outlets, Production Plant, Machinery Repair Stores, Food & Beverage Manufacturing unit, Retail, Design works , Power & Mining

Spot of Origin:Zhejiang, China
Brand Identify:



Simple to disassemble, compact style

Solution Identify:

Z17A locking units

Interior Bore:


Source Ability

Provide Potential:
a thousand Piece/Pieces per Day

Packaging & Shipping

Packaging Particulars
Standard ocean deserving package deal

On the internet Customization

Product Description

choose size 30-600mm, tape Z17A keyless shaft hub locking system shrink disc (JB/T7934-1999)


Keyless locking devices is a new kind of innovative mechanical basic parts ,been widely used in worldwide to realize the transmission of load by means of friction of tightening twelve.9 high-toughness screws.


The main function of locking devices is to replace the joint perform of the one key and the spline to understand the link of the mechanical components (such as gears, flywheels, pulleys, and many others.) with the shaft to transmit the load.


Positive aspects

locking products have a lot of unique advantages more than the common interference joint and keyed joints:
(one) Use of locking devices make the manufacture and installation of the major areas basic. The machining of the shaft and the gap in which locking gadget is mounted does not require large precision production tolerances like an interference fit. There is no want to heat, awesome or pressurize the locking device, just tighten the bolts to the required torque. The hub can be effortlessly altered to the preferred place on the shaft. Locking devices can also be utilized to be part of elements with very poor weldability.
(2) The locking unit has a long support life and high energy. It relies on the friction for transmission, and there is no crucial groove weakening on the joint member, and there is no relative motion, and no dress in takes place for the duration of the function.
(3) When the locking device is overloaded, it will get rid of the coupling result and safeguard the gear from injury.
(four) The locking device can bear several loads, and its framework can be created into different patterns. Depending on the measurement of the installed load, it is also feasible to use numerous locking products in sequence.
(5) The locking unit is simple to disassemble and has great interchangeability. Given that the locking device can combine the hubs with big matching gaps, the bolts can be loosen throughout disassembly, so that the joints can be easily disassembled. When the growth is restricted, the get in touch with area is tightly equipped and is not effortless to trigger rust, and simple to be coupled and disassembled.


Application: mining equipment, coal mining equipment, ball mill, belt conveyor, packaging equipment, weighty equipment, light industrial equipment, foods equipment, CNC machine resources, metallurgical equipment, textile equipment, printing machinery, plastic equipment, chemical machinery, paper equipment, Marine equipment, tobacco equipment, fans, blowers, reducers, and so forth.



Model: Z17A expansion sleeve locking device 


 Z17A sort enlargement sleeve internal and outer cone ring is tightened with hexagon socket bolts.

The joint floor is lengthy and the neutrality is excellent.

It is suited for instances with higher rotation precision and massive load.


Floor: polished

Substance: 45# steel 

Nominal torque/ rated torque:17Nm-1200Nm 

Hole diameter: 30mm-600mm 

The Z17A kind enlargement joint screw has a mechanical overall performance rating of 12.nine.


Application cam Attributes: The shaft has no axial movement,  self-centering perform straightforward assembly and disassembly.


one, installation:

The expansion sleeve is greased at the manufacturing unit and can be set up right. When putting in, first screw three bolts 4 into the screw holes of the flange of the other element one and unfold them evenly around the circumference to open the inner sleeve 1 and the outer sleeve 2. Then area the growth sleeve into the hub gap of the style position and tighten the bolt with the pressure gauge. The strategy of tightening is to screw every single bolt to 1/4 of the rated torque at a time. The buy of tightening is bounded by the slit. The left and appropriate cross symmetry is tightened one particular right after the other to make certain that the rated torque benefit is reached. 

2. Disassembly:

Loosen all bolts a couple of turns before disassembly. Then screw in the bolt four top unfastened sleeve in the disassembled screw gap. 

3. Protection:

MoS2 oil is strictly prohibited throughout installation to stop contamination of the expansion sleeve. On equipment with inadequate open up air or functioning environment, rust-evidence grease must be utilized regularly on the exposed end confront and bolts of the growth sleeve. The expansion sleeve variety with greater rust resistance need to be chosen.

Z17A growth sleeve principal proportions for your sort decision.

Pls. order expansion sleeve Z17A=30*55 ,which means product-internal Diam.30mm+outer Diam.55mm


Z17B expansion sleeve major dimensions for your type decision.



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