The Auspicious AZ-7144 is a wheel limit switch in a compact side mount body, used to detect a moving part and switch a control circuit when that part reaches position. A cam, dog or machine carriage runs across the wheel, the wheel turns and pushes the actuator, and the contacts change over.

The wheel is the reason this model lasts in repeat duty. A plain lever tip scrapes against the cam every cycle, and that friction slowly wears the contact point until the trip position drifts. The wheel rolls instead of dragging, so the switch trips at the same spot on cycle one and cycle fifty thousand. It also means a faster moving part can pass without snagging the actuator.

Side mounting lets the switch sit flat along a machine frame or guide rail, where a top mounted unit would not fit. At 10A on 250V AC it switches control circuits directly, and 0.5A at 125V DC suits PLC inputs. The oil tight and waterproof body handles machine tool coolant, dust and splash, and one normally open plus one normally closed contact give a position signal and an interlock from a single device.

Key Features

Roller wheel actuator reduces friction and wear from sliding cams
Consistent trip point over long cycle counts
Side mount body fits flat along frames and guide rails
1NO and 1NC contacts for signal and interlock together
10A 250VAC rating for direct AC control switching
0.5A 125VDC rating for DC signals into PLCs
Fine operating speed range from 0.01mm to 50cm per second
Oil tight and waterproof construction, CE marked, made in Taiwan

Technical Specifications

Specification	Detail
Product Type	Side Mount Mini Limit Switch
Range of Product	AZ Series
Model	AZ-7144
Mounting	Side Mount
Actuator	Roller Wheel
Contact Configuration	1NO and 1NC
AC Rating	10A 250VAC
DC Rating	0.5A 125VDC
Operating Speed	0.01mm to 50cm per second
Protection	Oil Tight and Waterproof
Certification	CE Mark
Brand	Auspicious
Country of Origin	Taiwan
SKU	AZ-7144

Common Applications

Cam operated sequencing on machine tools, carriage and slide position detection, conveyor stop positions, sliding door and guard confirmation, packaging and assembly line indexing, jig and fixture position checks, and any repeat cycle application where a plain lever tip would wear out.

Choosing the Right Limit Switch

The actuator decides the switch, and it comes down to how the moving part arrives. A wheel suits a cam sliding across the actuator from the side. Where the part makes slower, direct contact and the budget matters, the lever limit switch AZ-7120 is the simpler side mount option at the same 10A rating.

If the contact point varies or the lever length needs setting on site, the adjustable roller lever limit switch AZ-8108 covers 5A duty at IP65, and the 10A adjustable roller lever limit switch AZ-5108 does the same in a heavier body. For long reach onto an irregular target, use the adjustable rod limit switch AZ-8107.

Where the push comes straight down from above, the roller plunger limit switch AM-1308 handles 15A, and the cross roller plunger limit switch ME-8122 accepts approach from more than one side. For heavy plant such as cranes and lifts, step up to the big wheel limit switch AZ-5108L with its oversized wheel and IP67 body, or the ball limit switch AZ-5109. Where an overrun could snap a rigid actuator, the spring limit switch AZ-8166 flexes and returns.

Why Buy From Qahraba

Qahraba supplies electrical contractors, panel builders and machine builders across the UAE and worldwide. Every limit switch we stock is genuine Auspicious product. Local UAE orders ship within 1 to 2 working days, free above AED 250, or collect free from our Dubai store. Call or WhatsApp +971 52 913 9543 for bulk pricing.

FAQ,s

What is a wheel limit switch used for?

It detects when a moving part reaches a set position. A cam or dog runs over the wheel, the wheel turns and pushes the actuator, and the contacts signal the controller to stop, reverse or move to the next step.

Why a wheel instead of a plain lever?

A wheel rolls rather than scraping, so friction and wear stay low and the trip point stays accurate. A plain lever tip wears down over repeated cycles and the trip position drifts.

What does 1NO 1NC mean?

One normally open and one normally closed contact. When the wheel is pushed, the NO closes and the NC opens, giving two signals from a single switch.

Can it connect directly to a PLC?

Yes. The 0.5A 125VDC rating covers standard 24V DC PLC inputs, and the 10A 250VAC rating allows direct switching of AC control circuits.

Is it suitable for oily or wet areas?

Yes. The body is oil tight and waterproof, so it suits machine tools with coolant, conveyors and equipment exposed to splash.

What is the difference between this and the big wheel AZ-5108L?

The AZ-7144 is a compact side mount unit for machine duty. The AZ-5108L has a much larger wheel, an adjustable lever and IP67 sealing, built for lifts, cranes and outdoor heavy equipment.

Limit Switch Wheel NO NC Side Mount 10A AZ-7144 Auspicious