On the factory floor, robot arms pick parts with micron-level repeatability and AGVs weave through aisles without a hitch—all thanks to one unseen component: the rotary encoder. For decades the optical encoder, with its glass code-disc and photo-interrupter, ruled precision motion control. Yet the harsher, faster and dirtier modern plant grows, the more its weaknesses show.
Why optical encoders fall short
1. Dirt-sensitive: A single layer of grinding dust, weld spatter or oil mist blocks the light beam and corrupts the count.
2. Vibration-fragile: Paper-thin discs and sub-millimetre optical alignment drift under shock or 5 g robot accelerations, causing lost pulses and positioning errors.
3. Installation-heavy: Source, disc and detector must be coaxial within ≈0.1 mm; technicians spend hours with micrometres and fixtures, and every re-alignment after maintenance costs time and money.
4. Speed-limited: Above 100 000 rpm the photo-detector cannot resolve the passing slots; signals blur and the controller loses track of the joint.
CONNTEK magnetic encoders erase these pain points
A tiny diametrically-poled magnet and a monolithic Hall sensor die measure angle from the rotating field—no light, no discs.
1. Immune to contamination: Oil, metallic dust or coolant have no effect on the magnetic signal; CONNTEK units drift <0.005° after 24 h in a grinding-shop fog.
2. Shock-proof: Solid-state sensor + molded magnet survive 20 g impacts with zero loss of counts, keeping robot arms and roving AGVs accurate.
3. Drop-in mounting: Off-axis tolerance ±15 mm and auto-calibration cut installation time by 30 %—“point-and-shoot” like a smartphone camera, no precision shims required.
4. Ultra-high speed: 2 MS/s sampling and 0.5 µs latency track rotors at 180 000 rpm, 1.8× faster than the best optical devices.
Head-to-head numbers
Spec (24 h) | CONNTEK Magnetic | Optical | Plain Magnetic |
Accuracy drift | ≤ 0.005° | ≤ 0.003° | ≥ 0.05° |
Max speed | 180 000 rpm | 100 000 rpm | 60 000 rpm |
Shock (no error) | 20 g | 10 g | 15 g |
Install time saving | 30 % | 0 | 10 % |
Annual failure rate | < 0.3 % | > 2 % | > 1 % |
From oily car-body lines to 180 000-rpm spindles and outdoor AGVs, CONNTEK magnetic encoders deliver the robustness, speed and plug-and-play convenience that next-generation robots demand. Swapping optics for magnets is no longer an experiment—it is the fastest way to boost robot performance today.
About Mandu Technology
Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.
Business: sales@manduic.com
Website: www.manduic.com
Sales: +86 150-1290-5940
Telephone: +86-150-1290-5940
Mobile phone: +86-150-1290-5940
Mailbox: sales@manduic.com
Address: B1205, building 2, Fenghui garden, No. 9, South Ring Road, Matian street, Guangming District, Shenzhen