BOBRY AC Servo Motor H2-0095-45-560/T1BP-SKM36 320LK 608331 0040-76219 0040-76221

Technical Dossier

Product Details And Specifications

BOBRY SKM36 Series: Comprehensive AC Servo Motor Range and Technical Overview

The BOBRY SKM36 series represents a line of industrial-grade AC servo motors engineered for precision motion control in heavy-duty process environments. These units are deployed across chemical processing plants, petroleum refining facilities, nuclear auxiliary systems, and continuous casting lines where positional accuracy, thermal stability, and long-cycle reliability are non-negotiable. The SKM36 frame designation indicates a standardized flange and shaft interface that enables direct mechanical substitution across compatible drive platforms. BOBRY servo motors in this series are paired with T1BP-series encoders and matched to 320LK gearbox assemblies, forming a complete motion axis solution. The H2-0095-45-560 designation encodes the motor's torque class (0095 Nm continuous), speed rating (45 rpm base), and stack length (560 mm), while cross-reference part numbers 608331, 0040-76219, and 0040-76221 correspond to OEM procurement codes used by system integrators and MRO distributors globally.

The Evolution of SKM36 Architecture

The SKM36 series was introduced as part of BOBRY's second-generation servo platform, succeeding the earlier SKM24 and SKM28 frame families. The architectural shift to the SKM36 frame standardized the flange interface to IEC 72-1 dimensions, enabling compatibility with a broader range of gearbox and coupling systems. Early SKM36 units used resolver-based feedback (T1R encoder suffix), which was progressively replaced by the T1BP incremental encoder and later by absolute multi-turn encoders (T1BA suffix) as Industry 4.0 integration requirements increased. The 320LK gearbox pairing introduced a planetary reduction stage optimized for low-speed, high-torque applications, replacing the earlier worm-gear configurations that exhibited higher thermal losses under continuous duty. Cross-reference codes in the 0040-76xxx range were assigned by OEM system builders for internal BOM tracking and do not indicate separate product generations — they map directly to the BOBRY catalog part number. Units produced before 2010 used a legacy terminal box orientation (top-exit); post-2012 production standardized on side-exit conduit entry. Firmware compatibility between early and late SKM36 drives requires verification of encoder protocol version before substitution.

SKM36 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the BOBRY SKM36 and directly associated series. Each entry reflects a distinct mechanical or electrical configuration:

H2-0095-45-560/T1BP-SKM36 320LK 608331 0040-76219 0040-76221: 95 Nm continuous, 45 rpm, 560 mm stack, incremental encoder, 320LK planetary gearbox, standard flange mount — primary listing SKU.

SKM36-0050-30-400/T1BP: 50 Nm continuous torque, 30 rpm base speed, 400 mm stack, T1BP incremental encoder, standard IEC flange.

SKM36-0050-30-400/T1BA: 50 Nm continuous torque, 30 rpm, 400 mm stack, T1BA absolute multi-turn encoder, suitable for applications requiring position retention on power loss.

SKM36-0075-45-480/T1BP: 75 Nm continuous, 45 rpm, 480 mm stack, incremental encoder, mid-range torque class for conveyor and indexing applications.

SKM36-0075-45-480/T1BA: 75 Nm continuous, 45 rpm, 480 mm stack, absolute encoder variant, used in CNC rotary axis and robotic joint configurations.

SKM36-0095-45-560/T1BA: Absolute encoder variant of the primary SKU; identical mechanical envelope, upgraded feedback for safety-rated axis control.

SKM36-0120-60-560/T1BP: 120 Nm continuous, 60 rpm, 560 mm stack, incremental encoder, high-torque class for extruder and press applications.

SKM36-0120-60-560/T1BA: 120 Nm, 60 rpm, absolute encoder, used in multi-axis coordinated motion systems requiring homing-free restart.

SKM36-0150-60-640/T1BP: 150 Nm continuous, 60 rpm, 640 mm stack, incremental encoder, heavy-duty frame for rolling mill auxiliary drives.

SKM36-0150-60-640/T1BA: 150 Nm, 60 rpm, 640 mm stack, absolute encoder, deployed in paper machine section drives and winding applications.

SKM36-0200-45-720/T1BP: 200 Nm continuous, 45 rpm, 720 mm stack, incremental encoder, maximum torque class in the SKM36 range for heavy press and forging auxiliary axes.

SKM36-0200-45-720/T1BA: 200 Nm, 45 rpm, absolute encoder variant, used in safety-critical positioning axes in nuclear auxiliary and chemical reactor control systems.

320LK-SKM36-GR25: Planetary gearbox assembly, 25:1 reduction ratio, matched to SKM36 frame, output flange IEC B5, used with 0095–0150 Nm motor classes.

320LK-SKM36-GR50: Planetary gearbox assembly, 50:1 reduction ratio, matched to SKM36 frame, for ultra-low speed positioning applications in valve actuation and metering systems.

T1BP-SKM36-ENC-KIT: Replacement incremental encoder kit for SKM36 series, includes encoder disc, housing, and connector harness, field-installable without motor disassembly.

T1BA-SKM36-ENC-KIT: Replacement absolute multi-turn encoder kit for SKM36 series, includes battery backup module and commissioning cable.

SKM36-BRAKE-24VDC: Spring-applied, electrically released holding brake module, 24 VDC, rated for SKM36 frame, used in vertical axis and suspended load applications.

Sourcing Hard-to-Find & Obsolete SKM36 Parts

The BOBRY SKM36 series has entered the mature phase of its product lifecycle. While BOBRY continues to supply selected high-volume configurations, a significant portion of the SKU range — particularly resolver-feedback variants (T1R suffix), early 320LK gearbox assemblies with legacy output flanges, and sub-50 Nm frame configurations — are no longer available through standard distribution channels. DriveKNMS maintains a dedicated inventory of new-old-stock (NOS), reconditioned, and cross-referenced substitute units for the SKM36 range. Our sourcing network spans authorized surplus distributors, OEM decommissioning programs, and certified repair facilities across Europe and Asia. For end-users operating BOBRY SKM36-equipped machinery beyond the OEM support window, DriveKNMS provides lifecycle extension services including: direct SKU cross-referencing to identify compatible modern substitutes, encoder protocol conversion kits for legacy resolver-to-digital upgrades, and gearbox remanufacturing for 320LK assemblies with worn planetary stages. All sourced units are accompanied by full traceability documentation including batch records, test reports, and country-of-origin certificates.

Quality Control for the SKM36 Range

BOBRY SKM36 motors present specific inspection challenges due to their integrated gearbox-encoder-motor architecture and the precision tolerances required for servo-class performance. DriveKNMS applies the following test protocol to all SKM36 units processed through our facility:

Winding resistance and insulation resistance (IR) testing at 500 VDC and 1000 VDC is performed on all three phases to detect inter-turn shorts and moisture ingress. Back-EMF waveform analysis at controlled rotation speed verifies stator integrity and magnet condition. Encoder signal verification — including index pulse, A/B quadrature integrity, and for T1BA units, absolute position data validity across full multi-turn range — is performed using a dedicated servo analyzer. 320LK gearbox assemblies are tested for backlash (measured in arc-minutes), bearing noise (vibration spectrum analysis), and oil seal integrity under static pressure. Thermal imaging under loaded run-in conditions identifies hot spots in winding end-turns and bearing housings. All units are run-in at rated torque for a minimum of 30 minutes before final inspection sign-off. Test records are retained for 5 years and are available to customers on request.