SPECIFICATIONS

CNTD CZ-8105N Long Arm Roller Limit Switch IP65 5A 250V SPDT Replacement for Omron WLCA12 CNC Machine Elevator

1. Core Selling Points(7 Bullets)

1. Long-Arm Roller - Extended-Reach Trigger

- Extended lever + 18mm stainless steel roller for a larger trigger radius.

- Ideal when the detection target sits farther from the switch body than a standard short-arm model allows.

- The roller rolls smoothly along cams/plates, reducing mechanical wear.

 2. Industrial-Grade Durability

- Electrical life >= 500,000 operations (full load).

- Mechanical life >= 10,000,000 operations.

- Double-spring contact design for stable actuation.

- Silver-alloy contacts - high conductivity, oxidation resistant.

3. IP65 Waterproof and Dustproof

- IP65 rating - dust-tight and protected against water jets from any direction.

- Zinc-alloy die-cast housing + reinforced plastic - impact resistant, oil-mist resistant.

- Operating temperature (-20 to +70 C).

- PG11.5 cable gland at the tail - better sealing than the TZ-8 series.

4. Dual Independent Circuits

- SPDT contact form: 1 Normally Open (NO: 3-4) + 1 Normally Closed (NC: 1-2).

- Outputs both "arrived" and "departed" signals simultaneously.

- Rated 5A at 250VAC, covering 8V-250V DC wide range.

5. Full Certifications - Global Compliance

- CCC (China Compulsory Certification).

- CE (EU Conformity).

- ISO 9001 Quality Management System.

- Ready to export to EU, Russia, South America, etc.

6. Easy Installation and Drop-in Replacement

- 4x M5 mounting holes, standard pitch 56x21mm.

- Direct replacement for Omron WLCA12, Honeywell 14CE2 and other international brands.

- M3.5 terminal screws - secure, non-loosening wiring.

- Compact body: 64mm height x 35.9mm width.

7. Wide Applications - Industrial Essential

- CNC machine tool axis travel limits.

- Elevator floor positioning, safety door detection.

- Conveyor / sorting line item detection.

- Automatic door, roller shutter open/close limits.

- Packaging machinery, printing equipment, textile machinery.

- Crane anti-collision limits.

2. Product Description

English Description

CNTD CZ-8105N Vertical Limit Switch - Long-Arm Roller Lever for Extended Reach

The CNTD CZ-8105N is a premium vertical limit switch featuring a long-arm roller lever actuator, engineered for applications where the detection target is farther from the switch body than standard short-arm models allow. The 18mm stainless steel roller ensures smooth, low-wear contact against cams, plates, or moving machine parts.

Key Features:

- SPDT dual-circuit contacts (1 Normally Open + 1 Normally Closed)

- IP65 protection - dust-tight and protected against water jets

- 5A rated current at 250VAC (resistive load)

- Wide voltage range: AC 125/250V, DC 8V-250V

- Electrical life >= 500,000 ops, Mechanical life >= 10,000,000 ops

- Long-arm roller lever for extended triggering distance

- 4x M5 mounting holes at standard 56x21mm spacing

- CCC + CE certified for global industrial markets

Typical Applications:

CNC machine tool travel limits, elevator floor positioning, conveyor belt item detection, automatic door open/close limits, packaging machinery workstation positioning, printing equipment cylinder limits, textile machine roller detection, and crane anti-collision protection.

Package Includes:

- 1x CZ-8105N limit switch

- 1x PG11.5 cable gland (pre-installed)

- 1x English user manual

- 1x Wiring diagram card

Certifications: ISO 9001:2015 | CCC (China Compulsory Certification) | CE (EU Conformity)

3. CZ-8 Series Roller Lever Comparison

| Model | Actuator | Total Length | Body Width | Mount Pitch | Recommended Use |

| --- | --- | --- | --- | --- | --- |

| CZ-8104N | Standard roller (short arm) | 96 mm | 28.2 mm | 56x21 mm | General machines, conveyors |

| CZ-8105N | Long-arm roller lever | 124.4 mm | 35.9 mm | 56x21 mm | Extended reach, cam detection |

| CZ-8108N | Standard roller lever | 96 mm | 28.2 mm | 56x21 mm | General position detection |

| CZ-8109N | Side-mount roller lever | 105 mm | 28.2 mm | 56x21 mm | Side mounting, machine-side limit |

CZ-8105N unique advantage:

- 28.4mm longer than CZ-8104N / CZ-8108N - longer trigger distance.

- Wider body (35.9mm) - more rigid structure.

- Ideal for equipment with large cam radius or long motion arc.

4. Application Scenarios

| Industry | Position | Why CZ-8105N |

| --- | --- | --- |

| CNC Machines | X/Y/Z axis travel limit | Long arm reaches over guide rail covers |

| Elevators | Car leveling, door limit | Smooth roller, suited to repeated motion |

| Conveyors | Item presence detection | Long arm reaches in from conveyor side |

| Automatic Doors | Open/close limit | Roller rolls along door track, long life |

| Packaging Machines | Cam cycle detection | Long arm matches large-diameter cams |

| Printing Equipment | Cylinder position | Large swing, high fault tolerance |

| Textile Machines | Roller/cylinder limit | Stainless roller resists fiber dust |

| Cranes | Trolley/bogie anti-collision | Long arm triggers early, larger safety margin |

| AS/RS Warehousing | Stacker lift limit | Long arm fits side rail mounting |

| Robotics | Joint/end-effector feedback | High precision, good repeatability |

5. FAQ (10)

Q1: What is the difference between CZ-8105N and CZ-8104N?

> CZ-8104N is a standard short-arm roller (96mm total). CZ-8105N is a long-arm roller lever (124.4mm total) with a longer reach - suited to targets farther from the mounting surface.

Q2: Can CZ-8105N directly replace Omron WLCA12?

> Mounting pitch and electrical specs are essentially identical; most scenarios allow direct replacement. We recommend customers verify actual mounting space and cam position before bulk purchase.

Q3: Can IP65 be used outdoors?

> It resists rain splash and water jets, but is not suitable for prolonged immersion. For IP67, choose the CWL series or contact us for customization.

Q4: What is the maximum current it can handle?

> 5A at 250VAC (resistive load). For inductive/motor loads, derate per the ratings table; for large motors, use a contactor.

Q5: Can the cable length be customized?

> Yes. For batches >=500 pcs, we offer pre-wired 1m/2m/3m/5m or M12 connector versions.

Q6: Does the long arm break more easily?

> The lever uses thickened stainless steel; service life matches the series standard under normal use. Avoid lateral impact and excessive over-travel.

Q7: How do I wire it?

> Terminals 1-2 are Normally Closed (NC); 3-4 are Normally Open (NO). Common terminals are 1 and 3 respectively.

Q8: What is the operating temperature range?

> (-20 to +70 C), no freezing condition.

Q9: How much is one unit? Is there a wholesale price?

> Reference price 2.29-2.99 USD per pc. Tiered pricing applies for 10+ pcs - contact us for B2B quotes.

Q10: Do you support OEM/ODM?

> Yes. For batches >=500 pcs we can customize LOGO, packaging, cable, and connector specs.

6. Company Profile

CNTD - Changde Electric Co., Ltd.

- Established in the 1990s, focused on industrial control switches, relays, and terminal blocks.

- Products certified to CCC, CE, ISO 9001.

- Limit switch series widely used in machine tools, elevators, automation equipment, and power distribution.

- Business covers Asia, Europe, South America, Middle East and other global markets.