New SPI Absolute Encoder Supports 9 mm to 15.875 mm Motor Shafts

LAKE OSWEGO, Ore. — June 10, 2025 — Same Sky’s Motion & Control Group today announced the addition of a new series to its innovative AMT absolute encoder family designed to support larger motor shaft sizes from 9 mm to 15.875 mm (5/8 inch). The AMT25 series, based on Same Sky’s proprietary capacitive ASIC technology, brings the same high levels of durability, accuracy, and immunity to environmental particulates as current AMT encoder models. Outputting 12 bits or 14 bits of absolute position information with single-turn or multi-turn output options, the AMT25 utilizes full duplex Serial Peripheral Interface (SPI) communication for high accuracy position data.

Offering radial or axial cable connections, this absolute encoder series is housed in a compact modular package with a locking hub for ease of installation. It boasts low power consumption of 16 mA at 5 V, a wide operating temperature range from -40 to 105°C, and high accuracy of ±0.2 mechanical degrees. The digital nature of the AMT25 series also allows users to set the zero position via Same Sky’s AMT Viewpoint™ GUI or the encoder’s SPI protocol (single-turn versions only).

The AMT25-V kit affords users further flexibility in their design with the support of 9 different sleeve bore sizes from 9 mm to 15.875 mm and simple mounting tools under a single SKU.

The AMT25 encoder models are available immediately with prices starting at $50.31 per unit at 50 pieces through distribution. Please contact Same Sky for OEM pricing.

For helpful resources and tools on encoders and motion control, check out Same Sky’s Resource Library that houses a range of blog posts, videos, and more. Or for specific questions on our AMT encoder line, search our AMT Resources page.

Summary
Product name: AMT25 Series, AMT25-V Kit
Availability: Stock to 8 weeks
Possible users: Industrial, robotics, battery-powered, automation applications
Primary features: Supports shaft sizes from 9 mm to 5/8 in, SPI communication
Cost: $50.31 per unit at 50 pieces through distribution