Instruments
Mechanical Gauges: Rugged Reliability
These Progauges products cover 9 reliable mechanical gauges and instruments, including Ø 85mm cable-driven mechanical speedometers, odometers, and tachometers, as well as 52 mm Bourdon tube gauges for monitoring oil pressure, coolant temperature, oil temperature, vacuum, and turbo boosts, and cable-driven counter wheel drivetrain components. Our mechanical gauges and instruments are fully mechanical, and they are intended for OEM/ODM development and aftermarket replacement across commercial trucks, buses, passenger cars, agricultural and construction machinery, forklifts, generator sets, and commercial marine vessels, delivering durable and precise machine monitoring performance.
MW82020 Mechanical Tachometer
Technical Specifications
|
Diameter |
3⅜" (Ø 85mm) |
|
Full-Scale Range |
0 – 3500 RPM |
|
Accuracy |
±2% of full scale |
|
Drive Ratio |
0.5 – 1.0 |
|
Backlight |
Incandescent lamp |
|
Adapter |
⅝-18 UNF |
|
Standards |
Compliant with SAE J678 |
|
Automotive-Grade Operating Temperature Range |
-40°C to +85°C |
|
Storage Temperature |
Per SAE J1810: -65°C to +85°C |
|
Ingress Protection |
IP67 (front side) |
Product Description
Overview
Ø 85mm cable-drive mechanical tachometer (RPM gauge) displaying engine RPM.
Fully mechanical gear-drive construction with no electronic components, intended for RPM gauge replacement and OEM / ODM dashboard integration on commercial trucks, buses, and agricultural or industrial machinery.
Full-scale range 0–3500 RPM, 0.5–1.0 drive ratio, ±2% full-scale accuracy, compliant with SAE J678. Automotive-grade -40°C to +85°C operating temperature, IP67 front-side ingress protection.
Key Features
▸ Full-Scale 0–3500 RPM, ±2% Accuracy
Per SAE J678; automotive-grade -40°C to +85°C operating temperature; IP67 front-side ingress protection.
▸ Drive Ratio 0.5–1.0
Fully mechanical gear drive, cable-drive transmission, no electronic components.
▸ Standard ⅝-18 UNF Adapter
Incandescent (LAMP) backlight; fits standard Ø 85mm instrument cutouts.
Applications
For any vehicle or equipment with cable-drive instruments — heavy-duty trucks, buses, coaches, passenger cars, agricultural machinery, construction equipment, forklifts, generator sets, and commercial marine vessels.