| Part Number: | TZ-8 | 104 | |
|---|---|---|---|
| Explanation: |
Series TZ-8 - Vertical limit switch series |
Actuator 104 - Plastic roller lever |
Cable entry Blank - Rubber tail sleeve; no suffix is added to the model code |
TZ-8 limit switches combine a metal housing, reinforced plastic cover and a rubber cable sleeve with a snap-action 1NO+1NC contact arrangement. Roller levers, adjustable rods, plungers and flexible spring actuators let the switch match the approach and travel of a moving machine part. Select the complete model by actuator geometry, available travel and required operating force.
The NO contact uses terminals 13-14 and the NC contact uses terminals 11-12. Direct opening applies only to the NC contact on the six lever models identified below. The spring and plunger models are not assigned that function.
| Model | Head code | Actuator | NC direct opening |
|---|---|---|---|
| TZ-8104 | 104 | Plastic roller lever | Yes |
| TZ-8105 | 105 | Metal roller lever | |
| TZ-8107 | 107 | Adjustable rod lever | |
| TZ-8108 | 108 | Adjustable lever with plastic roller | |
| TZ-8109 | 109 | Adjustable lever with metal roller | |
| TZ-8111 | 111 | Plunger | Not specified |
| TZ-8111M | 111M | Plunger with metal head | |
| TZ-8112 | 112 | Cross-wheel roller plunger | |
| TZ-8112M | 112M | Cross-wheel roller plunger with metal head | |
| TZ-8122 | 122 | Vertical-wheel roller plunger | |
| TZ-8122M | 122M | Vertical-wheel roller plunger with metal head | |
| TZ-8166 | 166 | Plastic rod with coil spring | |
| TZ-8167 | 167 | Coil spring | |
| TZ-8168 | 168 | Metal rod with coil spring | |
| TZ-8169 | 169 | Flexible whisker | |
| TZ-8108H | 108H | Adjustable lever with rubber roller | Yes |
The fixed series identifier is TZ-8, followed directly by the complete head code. The rubber cable sleeve has no suffix: TZ-8104 is a complete example. The metal-head codes 111M, 112M and 122M are selection options; the operating-characteristic tables below apply only to the individually identified models.
| Parameter | Value and condition |
|---|---|
| Contact arrangement | 1NO+1NC, snap action |
| Cable entry | Rubber tail sleeve; no ordering suffix |
| Operating speed | 5mm/s-0.5m/s |
| Electrical operating frequency | 30 operations/min |
| Initial contact resistance | 25mΩ maximum |
| Insulation resistance | 100MΩ minimum at 500VDC |
| Minimum applicable load | 24VDC, 10mA |
| Rated insulation voltage Ui | 380V |
| Rated impulse withstand voltage Uimp | 2.5kV |
| Conventional free-air thermal current Ith | 10A |
| Dielectric strength between open contacts of the same polarity | 1000VAC, 50/60Hz, for 1 minute |
| Dielectric strength between live and non-live metal parts | 1500VAC, 50/60Hz, for 1 minute |
| Dielectric strength between each terminal and ground | |
| Vibration resistance | 10-55Hz, 1.5mm double amplitude |
| Shock resistance, mechanical durability | 1000m/s², approximately 100g |
| Shock resistance, malfunction | 300m/s², approximately 30g; coil-spring types excluded |
| Operating ambient temperature | -20°C to +70°C, without icing |
| Relative humidity | Below 95%RH |
| Enclosure protection | IP65 |
| Electrical durability | Test load |
|---|---|
| More than 500,000 cycles | 240VAC, 3A, resistive |
| More than 300,000 cycles | 240VAC, 6A, resistive |
| More than 500,000 cycles | 250V, 6A, resistive |
Durability values apply to the stated test conditions. Thermal current, switching current and utilization-category ratings describe different duties and are not interchangeable.
All currents in the following table are in amperes. A dash means no rating is specified for that combination.
| Rated voltage | Noninductive load | Inductive load | ||||||
|---|---|---|---|---|---|---|---|---|
| Resistive | Lamp | Inductive | Motor | |||||
| NC | NO | NC | NO | NC | NO | NC | NO | |
| 125VAC | 6 | 1.5 | 0.7 | 3 | 2 | 1 | ||
| 250VAC | 1 | 0.5 | 1.5 | 0.8 | ||||
| 12VDC | 6 | 3 | 4 | 3 | ||||
| 24VDC | ||||||||
| 125VDC | 0.4 | 0.2 | — | — | — | |||
| 50VDC | ||||||||
| Contact | Maximum surge current |
|---|---|
| NC | 24A |
| NO | 12A |
Inductive-load ratings use a power factor of 0.4 for AC or a time constant below 7ms for DC. Lamp-load ratings assume inrush up to ten times steady current; motor-load ratings assume inrush up to six times steady current.
OF is maximum operating force; RF is minimum release force. PT is maximum pretravel unless a tolerance is given, OT is minimum overtravel, MD is maximum differential travel unless a tolerance is given, and TT is minimum total travel. OP is the operating position measured from the datum in the dimensional drawing. Angular and linear travel are listed separately.
| Lever model | OF | RF | PT | OT | MD | TT | OP |
|---|---|---|---|---|---|---|---|
| TZ-8104 | 7.5N | 1N | 20° | 75° | 12° | 95° | — |
| TZ-8105 | |||||||
| TZ-8107 | |||||||
| TZ-8108 | |||||||
| TZ-8109 | |||||||
| TZ-8108H |
| Plunger model | OF | RF | PT | OT | MD | TT | OP |
|---|---|---|---|---|---|---|---|
| TZ-8111 | 9N | 1N | 1.8mm | 4mm | 1mm | 5.5mm | 26±0.8mm |
| TZ-8112 | 1.5N | 37±0.8mm | |||||
| TZ-8122 |
| Flexible actuator model | OF | RF | Angular PT | Linear PT | OT | Angular MD | TT | OP |
|---|---|---|---|---|---|---|---|---|
| TZ-8166 | 1.5N | — | 15±5° | — | — | 10±2° | — | — |
| TZ-8167 | ||||||||
| TZ-8168 | Approximately 1.5N (150gf) | — | 30mm | — | ||||
| TZ-8169 | 1.5N | 15±5° | — | 10±2° |
Apply force to flexible actuators within the outer third of their length, measured back from the tip. The 15±5° pretravel range has a 20° upper limit.
Use the model-specific outline drawing in the attached catalog when setting the actuator approach and mounting position. The standard body has four Ø4.2mm mounting holes with 21±0.2mm horizontal and 56±0.2mm vertical spacing; the TZ-8108H drawing specifies a 56±0.3mm vertical spacing and a different base profile. Threaded holes are M5×0.8; the standard drawings specify at least 7.5mm thread depth.
| Model group | Actuator dimensions and adjustment |
|---|---|
| TZ-8104 / TZ-8105 | Ø18×6.5mm roller; 40mm overall head depth and 126.5mm overall height |
| TZ-8107 | Ø2.6×128mm rod; 30-100mm setting range |
| TZ-8108 / TZ-8109 | Ø18×6.5mm roller; R29.5-R72.5mm adjustment; 123.5-166.5mm overall height |
| TZ-8111 | Ø8.7mm metal plunger; 100.6mm overall height |
| TZ-8112 / TZ-8122 | Ø12.6×3.8mm metal roller; 112mm overall height; different roller orientation |
| TZ-8166 / TZ-8167 | 173mm overall height; plastic rod on 166, exposed coil on 167 |
| TZ-8168 / TZ-8169 | 175mm overall height; metal rod on 168, flexible whisker on 169 |
| TZ-8108H | Ø50×8.5mm rubber roller; R40-R80mm adjustment; 150.4mm illustrated height |
| Designation | Referenced standard | Documentation |
|---|---|---|
| CCC | GB/T 14048.5 | Request the applicable model documentation for the intended market |
| TUV | EN 60947-5-1 | |
| CE |
| Utilization category | Rated operational current and voltage |
|---|---|
| AC-15 | 6A at 250VAC |
| DC-13 | 0.3A at 220VDC |
These switches are intended for general industrial control. Applications involving personnel protection, nuclear or utility infrastructure, outdoor or chemically aggressive conditions, strong electromagnetic disturbance, fire or explosion hazards, military equipment or aerospace require a separately specified design and written application approval.
