Shanghai Huabang Industrial Business Network - limit stop

[limit stop]JK16 Limit switch

2026-6-19 11:15:33

JK16-100 AC limit switch is mainly suitable for the power supply circuit of construction elevators with AC 50Hz (60Hz), rated working voltage up to 380V (440V), and rated working current of 100A. When the limit switch of the elevator loses its function, use the switch to disconnect the main power supply of the elevator, achieving the terminal protection function of the construction elevator.

The shell components of this product are made of engineering plastic injection molding, which makes the product beautiful and solid, with high waterproof performance. Its internal contact cam combination is accurate, and it can safely meet the terminal protection function of construction elevators.

2�� Model and significance
JK 16 �C 100
JK: AC limit switch
Design Number 16
100 rated working current

3�� Technical parameters

Rated working voltage	AC 380(440)V	electrical life	5000 times
Rated working current	100A	mechanical life	50000 times
Rated insulation voltage	500V	Action lever action force	50N
Maximum number of control circuits	four	Angle of contact breaking action rod	60°

4�� External dimensions and installation dimensions

Dimensions: 210 × 192 × 270
Installation size: 170 × 88 × 4- �� 8.5

[limit stop]LX101-40A Fire stop limiter

2026-6-19 11:15:24

LX101-40A flame arrester

[limit stop]LX101-20A Fire stop limiter

2026-6-19 11:15:16

LX101-20A flame arrester

[limit stop]LX101-10A Fire stop limiter

2026-6-19 11:15:07

LX101-10A flame arrester

[limit stop]LX101-3A Fire stop limiter

2026-6-19 11:14:59

LX101-3A flame arrester

[limit stop]LX101 series limiters

2026-6-19 11:14:51

The LX101 series limiter series is suitable for AC 50~60Hz; AC380V; DC220V�� In power lines with currents ranging from 3A to 40A, CD1 and MD1 types of wire rope electric hoists with a limit of 0.5-10 tons are commonly used as limit protection for ascending and descending machinery. The main circuit of the lifting motor can be directly disconnected. Can replace the LXZ1 series and LX101 series. Normal operation at an altitude of 2500M, with an ambient temperature of -25 ��+40 ��; Environmental temperature 90%; Protection level IP44; Compliant with IEC337-1.GB14048.5-2001 standard.

LX101 series limiter

[limit stop]LXX-40A limiter

2026-6-19 11:14:42

LXX-40A limiter

[limit stop]LXD-40A Fire stop limiter

2026-6-19 11:14:34

LXD-40A flame arrester

[limit stop]LXD-20A Fire stop limiter

2026-6-19 11:14:26

LXD-20A flame arrester

[limit stop]LXD-10A Fire stop limiter

2026-6-19 11:14:17

LXD-10A flame arrester

[limit stop]LXD-3A Fire stop limiter

2026-6-19 11:14:09

LXD-3A flame arrester

[limit stop]LX4 series limit switch

2026-6-19 11:13:59

Product performance

Suitable for communication at 50-60Hz; AC380V; DC220V; In the control circuit with a current of 20A, it is used to limit the travel of various mechanisms during operation.
Each type of limit switch has its own unique structure and special application conditions.
LX4-11�� 12 type limit switch, suitable for translation mechanisms with small inertia stroke.
LX4-21�� 22 type limit switch, suitable for translation mechanisms with large inertia stroke.
LX4-31�� 32 type limit switch, suitable for lifting mechanisms.
LX4-41�� 42 type limit switch, suitable for translation mechanisms that require three operating positions.
LX4-62 limit switch, suitable for translation mechanisms that require three operating positions.
LX4-12S limit switch is suitable for translation mechanisms with large inert stroke water in waterproof applications.
The working altitude does not exceed 1000M; the surrounding temperature is -30 ��~+40 ��; The relative humidity of the air shall not exceed 85%; Protection level IP44. Compliant with GB14048. 5-93 standard.

LX4-11	Using a single arm with rollers for operation, the shaft rotates under the action of the spring to restore the operating arm to zero position
LX4-12
LX4-11S
LX4-12S
LX4-21	Used for operating a fork shaped arm with rollers in 2 rotational positions
LX4-22
LX4-31	Operate the load lever with a counterweight, and when the mechanism bracket lifts the counterweight, operate the load lever
LX4-32
LX4-31S
LX4-32S
LX4-41	Use a trident arm to operate three switching positions
LX4-42	Use a trident arm to operate three switching positions
LX4-61	Use double arms with rollers to operate 2 switching positions

Installation location diagram

LX4 series limit switch

[limit stop]QGX type lifting height limiter

2026-6-19 11:13:51

QGX type lifting height limiter introduction: Suitable for various types of cranes, it is an advanced safety protection device used to limit the lifting height. This limiter is driven by a worm gear and a cam triggered limit switch. It has the advantages of light weight, small size, easy installation and debugging, sensitive and accurate response, stable and reliable, and long service life. Generally, it can provide two protections for rise and fall, alarm limit and protection limit, and can be interchanged with old-fashioned pole structure height limiters.

Selection instructions for QGX type lifting height limiter:

1. Rated working voltage:~380V
2. Rated working current: 10A
3. Scope of work:
QGX-A type is suitable for lifting mechanisms with standard series or non-standard cylinder work cycles of 5-250t cranes within 0-40 cycles;
QGX-B type is suitable for lifting mechanisms with standard series or non-standard cylinder work cycles of 5t~250t cranes within 0-80 cycles;
QGX-C type is suitable for lifting mechanisms with standard series or non-standard drum work cycles of 5t~250t cranes within 0-120 cycles.

Product drawings:

QGX type lifting height limiter

[limit stop]LX36-8 series limit switch

2026-6-19 11:13:43

LX36-8 crane limit switch (hereinafter referred to as limit switch), this product is mainly used in control circuits with AC 50HZ, 60HZ, rated working voltage up to 380V, and DC rated working voltage up to 220V, to limit the working angle of the crane's rotating motion mechanism and perform sequential control.
Classification
2.1 Model Meaning

2.2 The limit switch can operate reliably under the following conditions:;
2.2.1 Altitude
The altitude of the installation site shall not exceed 2000 meters;
2.2.2 Medium temperature
The temperature of the surrounding air medium shall not be higher than+75 �� and not lower than -25 ��;
2.2.3 Relative humidity
The average relative humidity of the air in the wettest month at the installation location shall not exceed 90% (the average lowest temperature of the month shall not exceed+25 ��);
2.2.4 Pollution level of environmental conditions
The pollution level of the environmental conditions is level III;
2.2.5 Installation Category
The installation category is Class III;
2.3 Types of limit switches
2.3.1 Structural Type
Divided by structural type: This product has a rotating structure with three speed ratios: 80:1, 40:1, and 20:1.
2.3.2 Control Circuit
Divided by control circuit: This limit switch can accommodate up to 8 control circuits.

Structure Overview
The limit switch consists of a control system consisting of a main shaft through a gear reduction system, a camshaft with an adjustable cam plate group combination, and micro switches symmetrically arranged on both sides. The three components are integrated and installed in a casing with a protection level of IP64. The appearance and installation dimensions are shown in Figure 1. Figure 1: Outline drawing of limit switch 1LX36-8.

Parameters

4.1 Basic Parameters: The basic parameters of the limit switch are shown in Table 1

Rated control capacity	Rated working voltage (Ue) (V)	Rated working voltage (le) (A)	Agreed heating current (lth) (A)	Rated operating frequency (times/hour)	Rated insulation voltage Ui (V)
300VAAC	three hundred and eighty	0��8	six	three hundred	three hundred and eighty
300VAAC	two hundred and twenty	1��36
10WDC	two hundred and twenty	0��045
10WDC	one hundred and ten	0��09

4.2 Connection and disconnection
The on/off capability of the limit switch is shown in Table 2
Table 2

Usage category	Rated working current (le)	Connection conditions			Breaking conditions
Usage category	Rated working current (le)	l��A��	U��A��	COS Ø or T0.95 (ms)	Lc(A)	Ur(V)	COS Ø or T0.95 (ms)
AC-11	380V0.8	eight point eight	four hundred and eighteen	zero point seven	eight point eight	four hundred and eighteen	zero point seven
DC-11	220V��10W 0.045A	zero point zero five	two hundred and forty-two	300 ms	zero point zero five	two hundred and forty-two	300 ms

4.3 Electrical lifespan
The electrical life of the limit switch under the corresponding usage conditions listed in Table 3 is 100000 load operation flashes without the need for repair replacement parts.
Table 3

Usage category	Connection conditions			Breaking conditions
Usage category	l��A��	U��A��	COS Ø or T0.95 (ms)	Lc(A)	Ur(V)	COS Ø or T0.95 (ms)
AC-11	eight	three hundred and eighty	zero point seven	zero point eight	three hundred and eighty	zero point four
DC-11	zero point zero four five	two hundred and twenty	300 ms	zero point zero four five	two hundred and twenty	300 ms

4.4 Mechanical lifespan
The mechanical lifespan of the limit switch is 1 million cycles;
4.5 Extreme speed
The maximum speed at the input shaft end of the limit switch is 150r/min;

label

5.1 Contact number
The contact numbers of the control circuit contacts are shown in Figure 2.

model	Speed ratio	When the microswitch contacts are closed			Reference size (A)	remark
model	Speed ratio	Type of cam plate	Maximum working angle of cam plate	Limit switch spindle corresponding rotation speed (RPM)	Reference size (A)	remark
LX36-8	80��1 I	Ia	three hundred and thirty-eight point six	seventy-five point two	0
		Ib	three hundred and thirty-six point six	seventy-four point eight	one point five
		Ic	three hundred and thirty-four point six	seventy-four point three	two point four
		Id	three hundred and thirty-two point six	seventy-three point nine	three point two
		Ie	three hundred and thirty point six	seventy-three point four	four
		If	three hundred and twenty-eight point six	seventy-three	four point eight
		Ig	three hundred and twenty-six point six	seventy-two point five	five point seven
		II	one hundred and seventy-five	thirty-eight point eight
LX36-8	40��1 I	Ia	three hundred and thirty-eight point six	thirty-seven point six	0
		Ib	three hundred and thirty-six point six	thirty-seven point four	one point five
		Ic	three hundred and thirty-four point six	thirty-seven point one	two point four
		Id	three hundred and thirty-two point six	thirty-six point nine	three point two
		Ie	three hundred and thirty point six	thirty-six point seven	four
		If	three hundred and twenty-eight point six	thirty-six point five	four point eight
		Ig	three hundred and twenty-six point six	thirty-six point two	five point seven
		II	one hundred and seventy-five	one hundred and ninety-four
LX36-8	20��1 I	Ia	three hundred and thirty-eight point six	18��8	0
		Ib	three hundred and thirty-six point six	18��7	one point five
		Ic	three hundred and thirty-four point six	18��5	two point four
		Id	three hundred and thirty-two point six	18��4	three point two
		Ie	three hundred and thirty point six	18��3	four
		If	three hundred and twenty-eight point six	18��2	four point eight
		Ig	three hundred and twenty-six point six	18��1	five point seven
		II	one hundred and seventy-five	9��7

Cam angle and its adjustment

6.1 Working angle of cam plate
There are two types and eight types of cam plates, namely the first type has seven types such as la, ld...: g. There is only one type of Class II, and its working angle and corresponding speed of the limit switch spindle are shown in Table 4.

6.2 Adjustment of the working position of the cam plate group
The adjustment of the working position of the cam plate group should be carried out according to the working program requirements of each control circuit. And the starting and ending positions of their respective working programs are achieved by the different angles formed by each cam plate group (two), so adjustments can only be made on the premise of determining the working angles of each cam plate group.
For example, when the working starting angle of a certain contact closure interval is 43.7 ° and the ending angle is 138.9 °, how to adjust the cam plate group using the II wheel cam plate?
Due to the narrow protruding part of the Type II cam plate, which is visually noticeable and easy to adjust, the starting angle value is taken as 43.7 ° -13.7 °=30 °, and the ending angle value is taken as 138.9 °+13.7=152.6 ° Then align the 30 ° starting point mark on the dial with the notch on the support as shown in Figure 3. Adjust the center of one cam part in the adjustable cam group to be in line with the notches on the two support plates, and adjust the end working position of the other cam plate according to this method.
Regarding the determination of the starting and ending intervals for the closure of each control circuit contact, the "0 point" on the dial can be used as the unified calculation origin, and the data listed in Table 4 can be calculated using the proportional distribution method.
6.3 Adjustments and Precautions
6.3.1 Adjustment
The adjustment operation method of the cam plate is shown in Figure 4.
6.3.2 Precautions
a�� When loosening the round nut, do not allow the cam plate to rotate freely.
b�� After all the cam groups have been adjusted and verified to be correct, they must be tightened with round nuts to prevent loosening and misalignment.

Installation and Inspection

7.1 Installation
7.2 Product Installation
There are two installation forms for limit switches: a. Installation of shaft end flange; b�� The bottom of the shell is installed horizontally. No matter what form of installation is used, it is necessary to ensure that the axis of the crane rotating mechanism coincides with the input axis of the limit switch to prevent additional stress caused by installation errors. The installation dimensions are shown in Figure 1.
7.1.2 Installation of wires and cables
The limit switch is equipped with three wire inlet and outlet holes, as shown in Figure 1 for their positions and dimensions. The selected inlet and outlet holes must be sealed at the end of the wire installation to meet IP64 requirements. Unused holes must also be tightened with screw plugs.
7.2 Inspection
7.2.1 Inspection before installation
Before installation, it is necessary to check the rotational flexibility of the limit switch and whether other components are in normal working condition.
7.2.2 Pre operation inspection
Before the limit switch is put into operation, it is necessary to first verify whether the control system that adjusts the limit switch can accurately control it and make necessary adjustments.
Repair
8.1 Maintenance
The maintenance cycle of the limit switch should be carried out simultaneously with the maintenance of the crane electrical system. In addition to conducting necessary inspections and repairs, ZG-3 calcium based grease should be applied to parts with mechanical motion friction. And replace the damaged contact components (microswitches).
Explanation: Users who choose speed ratios beyond the basic specifications can place special orders.

[limit stop]LX44-20A Fire stop limiter

2026-6-19 11:13:34

The LX44 series flame arrester is suitable for power lines with AC 50HZ, voltage 380V and current up to 40A. It is used to limit 0.5-100 tons and is used for limit protection of wire rope electric hoist lifting and lowering machinery.

[limit stop]Limit switch for 2ZAAZ-10L( switchgear

2026-6-19 11:13:25

2ZAZ-10L (for switchgear) limit switch is suitable for AC 50~60Hz, AC380V~660V, DC220V~250V; In the 10A current control circuit, it is used as a switch cabinet machine tool for mechanical automatic control, motion limitation, transmission mechanism action or program control, and limit protection.

[limit stop]DXZ type multifunctional corner type travel limiter

2026-6-19 11:13:17

Scope of application

The DXZ multifunctional corner type travel limiter can be widely used for controlling and limiting the spatial three coordinate of lifting and transmission machinery in industries such as construction, ports, and mining. It has the characteristics of small size, multiple functions, high accuracy, adjustable limit, strong universality, and easy maintenance, installation, and use adjustment.
The limiter adopts an adjustable mechanical memory structure, with reliable performance and high sensitivity. The sensor equipped limiter, when paired with the ZXY display instrument, can simulate and display the instantaneous position of any space.
Model and its meaning

1. Users can accurately provide product specifications and quantities according to the following examples as needed.
The standard transmission ratio numbers are shown in Table 4-1
Example: DXZ-4/7W
That is, there are 4 control circuits for the limiter, with a transmission ratio of 1:274 and sensors.
Example: DXZ-6/F (600)
That is to say, there are 6 control circuits for the limiter, which are non-standard; The transmission ratio is 1:600, without sensors.
2. The standard designed memory cam (2T, 3T) system has a delay function. If users do not need a delay and choose to use an instantaneous switching cam, please declare it in the purchase contract.
3. The maximum effective angle of the DXZ type limiter is 320 °; (Or the number of revolutions of the input shaft is 0.89 times the transmission ratio, which is 0.89 × revolutions).
Example: The effective speed of the DXZ-4/7 limiter is 0.89 × 274=244 revolutions. The external transmission ratio should be considered when selecting.

Main technical parameters
a�� working environment
Environmental temperature: -40 to+55 ��
Relative humidity: not exceeding 90%
Altitude: not exceeding 2500m
b�� Transmission ratio: 1:13-960
c�� Repetitive positioning accuracy: The angle error of the memory cam is not greater than 0.005rad (0.3 °)
d�� rated voltage
AC:125��250V
DC:30v
e�� Rated current: 6A
f�� Control circuit: The standard design circuit is 1-4, and can be increased to 5-6 control circuits according to user needs.

DXZ type multifunctional corner type travel limiter

[limit stop]E-NT limit switch

2026-6-19 11:13:09

E-NT limit switch is suitable for AC 40~60Hz, voltage AC500V; In a control circuit with a current of 10A, it serves as an automatic control for machine tools and machinery, limiting motion, transmission mechanism actions, or program control.