Dynapar

SpareX Company is a supplier of Dynapar parts

For over 60 years, Dynapar has manufactured high-precision rotary incremental and absolute encoders, encoder-tachometers, and brushless resolvers for industrial automation, metallurgy, pulp and paper production, crane equipment, conveyors, and machine tool building. The brand is part of the Fortive group of companies and is recognized as a leader in its category by Control Design.

Russian enterprises face sanctions restrictions on the supply of American components and complicated cross-border logistics. A production line stoppage due to a missing part means direct losses: missed deadlines, contract penalties, and cascading downtime of related operations. Every hour of downtime costs more than a planned advance order of spare parts. SpareX Company solves supply challenges through direct, proven channels. We handle customs clearance and documentation preparation — this removes the main barrier to international logistics: the importer receives parts with a complete documentation package for customs clearance. Stock items are shipped within 3–7 business days, and made-to-order items within 25–45 business days.

Technical maintenance of Dynapar equipment

Timely maintenance of Dynapar encoders and resolvers directly affects the stability of production processes. Planned replacement of bearings, seals, optical disks, and sensor modules prevents emergency shutdowns and extends the service life of expensive equipment. Systematic maintenance per the manufacturer's schedule is reliable protection against unplanned downtime.

⚙️ Dynapar Products

Incremental hollow-shaft encoders of the HS35R and HS35iQ series (Incremental Hollow-Shaft Encoders HS35R / HS35iQ)

HS35R — Dynapar's flagship hollow-shaft encoder with 400G shock resistance, 20G vibration, IP67 protection, temperature range −40…+100 °C, resolution up to 5000 PPR; HS35R1024H1PA, HS35R1024H4P7, HS35R2048H4P7 — typical configurations. HS35iQ — smart version with PulseIQ™ technology, two variants: HS35iQ Standard (drop-in replacement for HS35R) and HS35iQ Programmable (configurable ABZ signals). Spare parts: optical code discs (unbreakable code disc), phased array sensor assemblies, bearings (bore: 3/8", 1/2", 5/8", 7/8", 1"), IP67 seals, tether brackets (rod tether, slotted flexible tether), nylon shaft current isolation washers, 10-pin latching cable connectors.

Absolute Encoders AI25 and HS35iQ Absolute (Absolute Encoders AI25 / HS35iQ Absolute)

AI25 — absolute encoder with EtherNet/IP, EtherCAT, SSI, Parallel, PROFINET interfaces; 400G shock resistance, 30G vibration, resolution up to 32 bits (combined). AI25 EtherCAT, AI25 EtherNet/IP, AI25 SSI — main versions. Spare parts: magnetic and optical code discs, EtherNet/IP and EtherCAT interface boards, absolute encoder bearings, sealing rings, power modules, industrial shielded cables, M12 connectors.

NorthStar RIM Tach and SLIM Tach Encoder Tachometers (NorthStar RIM Tach / SLIM Tach Encoder Tachometers)

RIM Tach 8500 NexGen and RIM Tach 6200 NexGen — non-contact magnetic tachometers with 70 thou (1.78 mm) air gap — the largest in its class, shock resistance up to 200G, ductile cast iron housing, stainless steel sensor modules; RT8 and RT1 — model designations for different motor frame sizes. SLIM Tach — profile encoder for sandwich mounting between gearbox and motor with short shaft. Spare parts: replaceable pulse wheels RT8/RT1 (field replacement), replaceable sensor modules NSRT (field replaceable), upgrade kits for transitioning from the old generation to NexGen, RIMFV converters (analog → digital).

Harowe and NorthStar Resolvers (Resolvers Harowe / NorthStar)

Frameless Resolvers Harowe — frameless resolvers for direct integration into servo motors; Ultra Performance Resolver Models for aerospace and precision drives. Housed Resolvers NorthStar: R56 — heavy-duty housed resolver for Reliance Automax systems, IP65, 200G shock, 40G vibration; RF25 — heavy-duty resolver with IP65, 200G shock. Spare parts: stator and rotor windings, resolver bearings, seals, 10-pin latching connectors and mating parts, repair kits.

Hazardous Area Encoders

HS35R versions and special series certified for hazardous locations; HSD35D2 — hazardous area version (replacing the discontinued HS35). Spare parts: explosion-proof housings, certified cable glands, seals, and explosion-proof bearings.

Non-Contact / Bearingless Encoders

Series designed for mounting without mechanical contact with the shaft and without their own bearings; sizes for C-Face 180 motors, Reliance 6.75" recess, 56/140 C-Face. Spare parts: sensor modules, mounting brackets, pulse wheels, cable harnesses.

Encoder Accessories

Measuring Wheels, CPL Flexible Shaft Couplings, shielded encoder cables, signal switchers, dual universal input amplifiers, RIMFV DC converters. Spare parts: replacement measuring wheels, CPL couplings in various sizes, cables by length and connector configuration, adapters, and mounting kits.

Equivalent and compatible solutions for Dynapar rotary encoders and resolvers are also available.

✅ Why choose Dynapar

Extreme reliability in harsh conditions. The HS35R and AI25 are certified for 400G shock resistance and 20–30G vibration, operate in the range of −40…+100 °C with IP67 protection — critical for metallurgy, pulp and paper production, and crane equipment.

Intelligent diagnostics with PulseIQ™. The HS35iQ identifies the fault type in real time: insufficient voltage, cable damage, coupling slippage, overspeed — reducing diagnostic time from hours to minutes and preventing recurring failures.

Full coverage of industrial Ethernet protocols. The AI25 supports EtherNet/IP, EtherCAT, SSI, Parallel, PROFINET — replacement is performed without controller adaptation or drive reprogramming.

Direct interchangeability with legacy models. Dynapar publishes cross-reference tables for Avtron, BEI, DRC, Sick-Stegmann, Allen-Bradley, Koyo, Accu-coder, and Reliance Automax (R56/RF25) replacements — finding an equivalent takes minutes.

Guaranteed delivery to Russia under any restrictions. SpareX provides delivery with full customs clearance and the necessary set of documents — from request to receipt at the warehouse, without the buyer being involved in logistics matters.