Product Overview
The TZ-8104 is a vertical limit switch equipped with a roller lever actuator. It is used for mechanical position detection, stroke limit control, and machine operation feedback in industrial automation equipment. The roller lever actuator is suitable for applications where a moving cam, guide rail, plate, or mechanical stopper contacts the switch during machine operation.
This page describes model TZ-8104 only. The product is suitable for automation equipment, conveyors, packaging machines, machine tools, door mechanisms, and other industrial control systems that require reliable mechanical position sensing.
Key Technical Data
| Item | TZ-8104 |
|---|---|
| Product type | Vertical limit switch |
| Actuator type | Roller lever |
| Contact form | 1NO + 1NC |
| NO terminal | 13–14 |
| NC terminal | 11–12 |
| Protection degree | IP65 |
| Operating force | 750 g max. |
| Release force | 100 g min. |
| Pre-travel | 20° max. |
| Overtravel | 50° min. |
| Movement differential | 12° max. |
| Electrical life | 500,000 operations or above |
Product Display
The TZ-8104 uses a vertical switch body with a roller lever actuator. The product structure includes a reinforced housing, aluminum alloy mounting base, roller lever mechanism, terminal cover, and conduit section for wiring.
Features
- Double-circuit contact structure for NO and NC control logic.
- Roller lever actuator for mechanical position detection and stroke limit control.
- Built-in contact box with double-spring mechanism for stable contact action.
- Reinforced plastic housing and aluminum alloy base for mechanical strength.
- Compact body structure suitable for industrial equipment installation.
- Water-proof and oil-proof construction for general industrial environments.
- IP65 protection degree when properly installed and sealed.
- Conduit design for convenient field wiring.
- Smooth actuation with sufficient overtravel allowance.
- The TZ-8 series provides other actuator configurations for different machine structures. This page focuses on the TZ-8104 roller lever type.
Drawing
Outline and Mounting Dimensions
The drawing is used to confirm the outline structure, mounting hole position, actuator movement direction, roller lever clearance, and cable entry direction of the TZ-8104. Before installation, check that the moving mechanical part can contact the roller smoothly without excessive impact.
Before installation, check the mounting hole position, actuator clearance, cable entry direction, and operating angle of the roller lever. The actuator should be contacted smoothly by the moving mechanical part without excessive impact.
Contact Form
Terminal Arrangement
TZ-8104 uses a double-circuit contact structure. The wiring logic should be selected according to the control circuit design.
Safety-related circuits often use NC logic, but the final contact selection should be confirmed according to the electrical design of the machine.
Ratings
Rated Load Table
| Rated
Voltage |
Resistance
Load NC |
Resistance
Load NO |
Lamp
Load NC |
Lamp
Load NO |
Inductive
Load NC |
Inductive
Load NO |
Motor
Load NC |
Motor
Load NO |
|---|---|---|---|---|---|---|---|---|
| 125VAC | 5A | 5A | 1.5A | 0.7A | 3A | 3A | 2A | 1A |
| 250VAC | 5A | 5A | 1A | 0.5A | 3A | 3A | 1.5A | 0.8A |
| 8VDC | 5A | 5A | 3A | 3A | 5A | 4A | 3A | 3A |
| 14VDC | 5A | 5A | 3A | 3A | 4A | 4A | 3A | 3A |
| 30VDC | 5A | 5A | 3A | 3A | 4A | 4A | 3A | 3A |
| 125VDC | 0.4A | 0.4A | – | – | – | – | – | – |
| 250VDC | 0.2A | 0.2A | – | – | – | – | – | – |
Load Type Notes
- Inrush current: NC below 24A, NO below 12A.
- Inductive load has a power factor of 0.4 minimum for AC and a time constant of 7 ms maximum for DC.
- Lamp load inrush current is approximately 10 times the steady-state current.
- Motor load inrush current is approximately 6 times the steady-state current.
- For inductive, lamp, or motor loads, the inrush current should be considered during circuit design.
Specifications
Electrical Specifications
| Item | Specification |
|---|---|
| Contact resistance | 25 mΩ max., initial value |
| Insulation resistance | 100 MΩ min. at 500 VDC |
| Dielectric strength 1 | 1000 VAC, 50/60 Hz for 1 minute between terminals of the same polarity |
| Dielectric strength 2 | 1500 VAC, 50/60 Hz for 1 minute between current-carrying and non-current-carrying metal parts |
| Dielectric strength 3 | 1500 VAC, 50/60 Hz for 1 minute between each terminal and ground |
| Electrical life | 500,000 operations or above |
Mechanical Specifications
| Item | Specification |
|---|---|
| Operating speed | 5 mm to 0.5 m/s |
| Operating frequency | Electrical: 30 operations/min |
| Vibration | 10–55 Hz, 1.5 mm double amplitude |
| Shock durability | 1000 m/s², approx. 100G |
| Shock malfunction | 300 m/s², approx. 30G |
Environmental Specifications
| Item | Specification |
|---|---|
| Ambient temperature | -20°C to +70°C, with no icing |
| Humidity | <95% RH |
| Degree of protection | IP65 |
Operating
The following operating characteristics apply to model TZ-8104 only. The mechanical stroke and actuator position should be checked according to the installation direction and the moving part of the machine.
| Parameter | Description | TZ-8104 |
|---|---|---|
| OF | Operating force, maximum | 750 g |
| RF | Release force, minimum | 100 g |
| PT | Pre-travel, maximum | 20° |
| OT | Overtravel, minimum | 50° |
| MD | Movement differential, maximum | 12° |
| OP | Operating position | Refer to drawing |
Selection Guide
Actuator and Motion Direction
TZ-8104 uses a roller lever actuator. It is suitable when a moving cam, guide rail, plate, or mechanical stopper contacts the roller from the correct direction. The roller helps reduce friction during actuation, but enough operating angle and reset space must be reserved. It should not be used as a direct heavy-impact stopper.
Electrical Load and Contact Rating
Before selecting TZ-8104, confirm whether the circuit is AC or DC, the operating voltage, current, load type, and whether the control system uses NO or NC logic. For motor, lamp, or inductive loads, select the switch according to the inrush current and not only the steady-state current.
Stroke, Overtravel and Reset
For TZ-8104, the pre-travel is 20° maximum, overtravel is 50° minimum, movement differential is 12° maximum, and release force is 100 g minimum. The moving part must operate the roller reliably without excessive impact. After actuation, the lever must return smoothly to its original position.
Installation Environment
TZ-8104 has an IP65 protection degree and is suitable for industrial environments with dust, oil mist, and light water exposure. It is not designed for continuous immersion. Avoid direct high-pressure water jet unless additional protection is used. The cable entry must be properly sealed, and the ambient temperature should remain within -20°C to +70°C.
Wiring and Contact Logic
The normally open contact uses terminals 13–14, and the normally closed contact uses terminals 11–12. Select the contact logic according to the control circuit. Safety or fault-detection circuits often use NC logic, but the final wiring method must follow the machine electrical design.