Kollmorgen TT-29500-3146-C DC Servo Motor (Special Military-Grade)

I. Product Overview

TT-29500-3146-C is a high-performance special brushed DC servo motor from the Kollmorgen TT series. It is a large-frame, high-power, military-grade, analog speed feedback customized model. This motor emphasizes ultra-high torque density, extremely low speed pulsation, military-wide temperature range, strong anti-interference, and long-life precious metal brushes. It is specifically designed for extreme environments and strict performance requirements such as aerospace, shipborne, vehicle-mounted, precision radar, fire control systems, and analog servo closed-loop systems. 

II. Model Code Analysis (TT-29500-3146-C)

TT: Kormogren DC servo motor + built-in coaxial tachometer generator Standard series

29500:

29: Frame diameter base code (2.93 inches extended, approximately 95mm in actual size)

500: Large length / high power code (long rotor, high torque configuration)

3146:

31: Winding specification (31 high-voltage, high-current winding, 220VDC/115VAC compatible)

46: Tachometer generator specification (46 ultra-high sensitivity, ultra-low ripple analog tachometer)

C: Installation / shaft / protection / connection: C-type flange installation, precision optical shaft, IP67 full sealing, military heavy-duty connector, military-grade special specification

III. Core Technical Parameters

(1) Electrical Parameters (DC servo)

Rated voltage: 220VDC (compatible with 115VAC rectification, 180~250VDC wide voltage)

Rated power: 2.2kW (continuous natural cooling)

Continuous stall torque: 14.5Nm

Peak torque: 43.5Nm (3× overload, short time)

Continuous current: 12.8A

Peak current: 38.4A

Torque constant (Kt): 1.13Nm/A

Reverse electromotive force constant (Ke): 11.5V/1000rpm

Armature resistance: 0.22Ω

Armature inductance: 0.58mH

Rated speed: 1500rpm

Maximum speed: 3000rpm

Regulation mode: Gold-plated composite brush (ultra-low sparks, long life)

Insulation class: H class (180℃)

Thermal protection: Dual PTC thermistors + temperature control switch (dual over-temperature protection)

(2) Tachometer Generator (Tach) Parameters

Feedback type: Coaxial DC tachometer generator (pure analog, no electronics, no power supply required)

Output sensitivity: 12.0V/1000rpm (±0.8% high precision)

Output ripple: <1.0% (peak-to-peak) (industry-leading low ripple)

Linearity: ±0.3% (full speed range)

Output impedance: <50Ω (ultra-low impedance, strong anti-interference)

(3) Mechanical Parameters

Frame size: 95mm circular flange (special non-standard, strong installation stiffness)

Shaft diameter: 19mm (precision optical shaft, no keyway, high concentricity)

Rotor inertia: 0.0018kg·m² (low inertia, high dynamic response)

Overall machine weight: 5.8kg

Bearings: Double row angular contact precision bearings (resistant to strong vibration, long life)

Mechanical life: ≥30,000 hours (rated conditions)

Cooling method: Natural convection + shell heat sink fins (no fan, high reliability)

(4) Environment and Connection

Protection class: IP67 (full sealing, waterproof up to 1m, oil-proof, dust-proof, salt fog-proof)

Operating temperature: -55℃ ~ +105℃ (military-grade ultra-wide temperature range)

Storage temperature: -65℃ ~ +125℃

Connectors: 2× MIL-DTL-5015 heavy-duty military circular connector

Power: 4 pins (armature +, armature -, thermal sensor, ground)

Feedback: 6 pins (tachometer +, tachometer -, brush monitoring, shielding, ground, backup)

Certifications: CE, UL, MIL-STD-810G, MIL-STD-461G (military electromagnetic compatibility)

IV. Product Core Characteristics

Military-grade ultra-high performance

95mm body output 14.5Nm continuous torque, power density > 379W/kg, high efficiency at 220VDC, high pressure, meets military / aviation strict driving requirements for heavy load, high precision, low speed, large torque.

Top-level analog tachometer indicators Model 46 special speed measuring device, 12V/krpm, <1% ripple, ±0.3% linearity, pure analog with zero failure, resistant to strong electromagnetic interference, perfectly compatible with old-fashioned analog servo systems, fire control, radar, without digital bus, high reliability scenarios.

Ultra-wide temperature IP67 fully sealed

-55℃~+105℃ ultra-wide temperature, IP67 waterproof and dustproof, resistant to salt fog and oil, resistant to strong vibration and shock, suitable for extreme harsh environments such as aviation airborne, shipborne, vehicle-mounted, field, polar regions, with 24-hour continuous operation.

Precious metal brushes long life

Using aerospace-grade precious metal composite brushes, commutation sparks are almost zero, life ≥ 10,000 hours, low speed < 1rpm ultra-smooth, zero pulsation, supports micro-motion, point motion, frequent start-stop, precise positioning.

Low inertia high dynamic response

Rotor inertia is only 0.0018 kg·m², torque response < 0.8ms, acceleration / deceleration extremely fast, suitable for high-speed positioning, rapid reciprocating, high dynamic stability precision servo systems.

Military standard reliable design

H-level insulation, dual thermal protection, military connectors, shock-resistant structure, fully sealed encapsulation, passed MIL-STD military vibration / shock / EMC tests, mean time between failures MTBF > 50,000 hours.

V. Typical application scenarios

Aerospace: airborne radar / optical-electrical turntable, satellite antenna drive, flight simulator, valve control

Military equipment: fire control system, weapon stabilization platform, vehicle servo, shipboard optical system, missile servo

Precision radar: phased array radar, radar antenna, scanning mechanism, high-precision stable platform

Shipborne equipment: ship stability system, shipborne weapons, underwater equipment, salt fog drive

Simulation system: retrofit of old-fashioned analog servo, military simulation closed-loop, high-reliability control without digital bus

Special industry: ultra-precision machine tools, semiconductor equipment, medical imaging, detection instruments (extreme environment)

VI. Accessories and selection

Compatible drivers: Kormogam GOLDLINE XT, B-800, AX-5000; third-party 220VDC analog DC servo drivers

Recommended cables: military specification 4×2.5mm² (power), 6×0.75mm² (feedback), double-layer shielding

Maintenance: brushes can be replaced on-site quickly, supports precise grinding of commutators, extends the overall machine life

Comparison selection: Compared with TT2931 series, torque increased by 179%, power increased by 780%, temperature range expanded by -15℃/+20℃, protection upgraded to IP67, it is the top model of military heavy-duty special analog servo for top-level requirements in aerospace, aviation, shipborne, heavy-load precision analog servo, extreme environment, high reliability without bus.

VII. Product advantages summary

TT-29500-3146-C is a 95mm frame, 220VDC, 14.5Nm, 2.2kW, 12V/krpm ultra-low ripple speed measuring device, IP67, -55℃~+105℃ ultra-wide temperature, military-grade reliable, precious metal brushes. Core advantages: ultra-high torque density, analog speed measurement zero failure, ultra-wide temperature fully sealed, strong anti-interference, long life, high dynamic, military standard. Perfectly meets the top-level requirements of military / aviation / shipborne / heavy-load precision analog servo, extreme environment, high reliability without bus, it is the preferred model for special military drives, retrofit of old-fashioned analog systems, ultra-reliable precise positioning.