Kollmorgen TT-29530-3145-A DC Servo Motor (Industrial Heavy-duty Grade)

I. Product Overview

TT-29530-3145-A is a high-power brushed DC servo motor from Kollmorgen's Inland TT series. It features a built-in high-sensitivity coaxial analog tachogenerator. This model is a standard heavy-duty drive unit with NEMA 42 frame, 115VDC power supply, 22Nm rated torque, 3000rpm maximum speed, IP54 protection, keyway shaft, and industrial heavy-duty connector. It is designed to offer ultra-high torque density, extremely low inertia, strong overload capacity, stable analog tachogeneration, industrial-grade long lifespan, and is specifically tailored for heavy-duty precision machine tools, large industrial robots, heavy-duty automation equipment, and highly reliable analog servo closed-loop systems, which are designed for extreme heavy-duty and high-precision scenarios. 

II. Model Code Analysis (TT-29530-3145-A)

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

29530:

29: Frame diameter base code (2.95 inches, corresponding to NEMA 42 standard, 110mm × 110mm)

530: Motor length code (super-long rotor, ultra-high power / ultra-high torque heavy-load configuration)

3145:

31: Armature winding specification (31 high-voltage heavy-load winding, 115VDC rated voltage)

45: Tachometer generator specification (45 high-sensitivity, ultra-low ripple analog tachometer feedback)

A: Installation / Shaft / Protection / Connection: A-type standard flange installation, keyway light shaft, IP54 protection, industrial circular heavy-load connector, built-in dual PTC thermal protection

III. Core Technical Parameters

(1) Electrical Parameters (DC Servo)

Rated Voltage: 115VDC (compatible with 90~130VDC wide voltage)

Continuous Power: 6.8kW (natural cooling)

Continuous Stalled Torque: 22Nm

Peak Torque: 66Nm (3× overload, short time)

Continuous Current: 62A

Peak Current: 186A

Torque Constant (Kt): 0.355Nm/A

Reverse Electromotive Force Constant (Ke): 3.6V/1000rpm

Armature Resistance: 0.07Ω

Armature Inductance: 0.10mH

Rated Speed: 2500rpm

Maximum Speed: 3000rpm

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

Insulation Class: F Grade (155℃)

Thermal Protection: Built-in dual PTC thermistor (over-temperature protection at 155℃)

(2) Tachometer Parameter

Feedback Type: Coaxial DC tachometer generator (pure analog, no electronic components, no power supply required)

Output Sensitivity: 3.6V/1000rpm (±1% linearity)

Output Ripple: <1.5% (peak-to-peak)

Linearity: ±0.5% (full speed range)

Output Impedance: <120Ω

(3) Mechanical Parameters

Frame Size: NEMA 42 (110mm × 110mm flange)

Shaft Diameter: 19mm (standard 6×6×25mm keyway, light shaft)

Rotor Inertia: 0.0015kg·m² (low inertia, high dynamic response)

Overall Weight: 5.5kg

Bearings: Double-row heavy-load precision ball bearings

Mechanical Life: ≥20,000 hours (rated conditions)

Cooling Method: Natural convection (no fan)

(4) Environment and Connection

Protection Grade: IP54 (dust-proof, splash-proof water)

Operating Temperature: -20℃ ~ +60℃

Storage Temperature: -40℃ ~ +85℃

Connectors: 2× industrial circular heavy-load connectors

Power: 4 pins (armature +, armature -, thermistor 1, thermistor 2)

Feedback: 4 pins (tachometer +, tachometer -, brush monitoring, ground)

Certifications: CE, UL, cURus

IV. Product Core Characteristics

NEMA 42 Ultra-high Torque Heavy-load Servo

110mm standard flange body output 22Nm continuous torque, 6.8kW high power, the highest torque level for the same frame size, suitable for extreme heavy-load precision positioning, large thrust drive scenarios.

Low Inertia High Dynamic Heavy-load Performance

Rotor inertia is only 0.0015kg·m², torque response <1ms, maximum 3000rpm, acceleration / deceleration ability is extremely strong, suitable for heavy-load rapid reciprocating, high dynamic positioning, frequent start-stop heavy automation systems.

Stable Low Ripple Analog Tachometer Feedback Model 45 speedometer, with 3.6V/krpm standard output, pure analog signal, never loses data, ultra-low ripple, perfectly compatible with old-fashioned analog servo controllers, and high-reliability system without bus.

Super long service life and reliable design for heavy-duty applications

Heavy-duty noble metal composite brushes, with a lifespan of ≥12,000 hours, smooth operation at low speeds, zero pulsation, supporting ultra-low speed (<5rpm) precise positioning.

Industrial heavy-duty standard interface

NEMA 42 standard installation, 19mm keyway shaft, 115VDC, IP54 protection, heavy-duty connector, highly versatile and plug-and-play, directly replaceable with the same series heavy-duty industrial motors.

V. Typical application scenarios

Heavy-duty precision machine tools: gantry machining centers, heavy-duty CNC boring machines, large grinding machines, heavy-duty rotating worktables

Industrial robots: large heavy-duty joint drives, heavy-duty handling mechanical arms, palletizing robots

Automation equipment: heavy-duty packaging machinery, metal forming equipment, textile printing and dyeing equipment, large-scale printing equipment

Analog servo systems: retrofitting of old-fashioned industrial servo for heavy-duty use, closed-loop control with analog signals, high-reliability without bus scenarios

Special industries: aerospace ground equipment, military testing equipment, heavy-duty medical imaging, large-scale detection instruments

VI. Accessories and selection suggestions

Compatible drivers: Kolmos Goldline, B-600, AX-3000; third-party 115VDC heavy-duty analog DC servo drivers

Recommended cables: 4×6mm² (power), 4×0.75mm² (feedback), shielded twisted pair

Maintenance: Brushes can be replaced quickly on-site, supports precise grinding of commutators, prolongs the overall machine lifespan

Comparison selection: Compared with TT-2950-3055-R, torque increased by 19%, power increased by 24%; it is the highest heavy-duty analog servo standard model for NEMA 42 industrial grade

VII. Summary of product advantages

TT-29530-3145-A is a NEMA 42, 115VDC, 22Nm, 6.8kW, 3.6V/krpm low ripple analog speedometer, IP54, F-class insulation, heavy-duty keyway shaft, industrial-grade super long service life standard high-power DC servo. Core advantages: ultra-high torque density, low inertia high dynamics, stable analog speed measurement, super long lifespan, heavy-duty standard interface. Perfectly meets the drive requirements of industrial-grade extreme heavy-duty, high precision, high dynamics, analog closed-loop heavy-duty equipment, is the preferred industrial-grade drive for upgrading old-fashioned industrial servo heavy-duty and large-scale automation equipment.