Kollmorgen TT-4205-4017-C DC Servo Motor (High Power Heavy Load Class)

I. Product Overview

TT-4205-4017-C is a high-power brushed DC servo motor from Kollmorgen's Inland TT series. It is equipped with a high-sensitivity coaxial analog tachogenerator. This model is a NEMA 42 frame, 115VDC powered, with a rated torque of 55.2Nm, a maximum speed of 2600rpm, IP54 protection, a large-diameter keyway shaft, and heavy-duty connectors. It is a heavy-duty precision drive unit that focuses on ultra-high torque, heavy-load conditions, stable analog tachogeneration, industrial-grade ultra-long lifespan, high reliability, and is specifically designed for heavy-duty precision positioning, large-load driving, and high-reliability analog servo closed-loop scenarios in demanding industrial automation applications. 

II. Model Code Analysis (TT-4205-4017-C)

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

4205:

42: Frame diameter base code (4.2 inches level, corresponding to NEMA 42 standard, 110mm × 110mm)

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

4017:

40: Armature winding specification (40 high-voltage winding, 115VDC rated voltage)

17: Tachometer generator specification (17 ultra-high sensitivity, ultra-low ripple analog tachometer feedback)

C:

Installation / Shaft / Protection / Connection: C-type heavy-duty flange installation, 35mm large-diameter keyway shaft, IP54 protection, heavy-duty industrial connector, built-in dual PTC thermal protection + bearing temperature monitoring

III. Core Technical Parameters

(1) Electrical Parameters (DC Servo)

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

Continuous Stalling Torque: 55.2Nm (40.8lb-ft)

Peak Torque: 165.6Nm (3× overload, short time)

Continuous Current: 39.5A

Peak Current: 118.5A

Torque Constant (Kt): 1.40Nm/A

Reverse Electromotive Force Constant (Ke): 14.5V/1000rpm

Armature Resistance: 0.15Ω

Armature Inductance: 0.35mH

Rated Speed: 2200rpm

Maximum Speed: 2600rpm

Regulation Method: Heavy metal composite brush (super long life, low sparks)

Insulation Class: F Class (155℃)

Thermal Protection: Built-in dual PTC thermistor + bearing temperature sensor (double over-temperature protection)

(2) Tachometer Parameter

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

Output Sensitivity: 14.5V/1000rpm (±0.8% linearity)

Output Ripple: <1.2% (peak-to-peak)

Linearity: ±0.5% (full speed range)

Output Impedance: <100Ω

(3) Mechanical Parameters

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

Shaft Diameter: 35mm (1-3/8in) (standard 10×10×40mm keyway)

Rotor Inertia: 0.0045kg·m² (high inertia, high stability)

Overall Weight: 15.8kg

Bearings: Double-row heavy-duty precision ball bearings (impact-resistant, long life)

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× Heavy-duty industrial round connectors

Power: 6 pins (armature +, armature -, thermistor 1, thermistor 2, bearing temperature measurement, ground)

Feedback: 5 pins (tachometer +, tachometer -, brush monitoring, shielding, ground)

Certifications: CE, UL, cURus, RoHS

IV. Product Core Characteristics

NEMA 42 top torque heavy-duty servo

110mm standard flange body output 55.2Nm continuous torque, for TT series NEMA 42 frame top power level, suitable for ultra-heavy precision positioning, large thrust drive scenarios.

Heavy-duty stable operation design High inertia rotor (0.0045 kg·m²) combined with heavy-duty bearings, operates at low speed with perfect smoothness and zero pulsation, supporting ultra-low speed (<3 rpm) precise positioning. It is resistant to shock and vibration, and is suitable for heavy equipment.

Ultra-high sensitivity analog speed feedback

17-inch specification speed meter, 14.5V/krpm ultra-high output, ultra-low ripple, ultra-high linearity, pure analog signal, never loses data, perfectly compatible with old-fashioned analog servo controllers, highly reliable without bus system.

Ultra-long life reliable design

Heavy-duty precious metal composite brush, life ≥ 15,000 hours, dual thermal protection + bearing temperature measurement, all-metal body, IP54 protection, suitable for harsh industrial environments, 24-hour continuous operation.

Industrial heavy-duty standard interface

NEMA 42 standard installation, 35mm large keyway shaft, 115VDC, IP54 protection, heavy-duty connector, highly versatile, plug-and-play, directly replaceable with the same series of industrial motors.

V. Typical application scenarios

Heavy machinery: CNC gantry milling machine, floor boring machine, heavy lathe, roll grinding machine, large rotary worktable

Industrial robots: Large heavy-duty joint drive, heavy-duty mechanical arm, handling robot, assembly robot

Automation equipment: Heavy-duty packaging machinery, metal forming equipment, cable equipment, paper-making equipment, rubber and plastic machinery

Analog servo system: Old-fashioned industrial servo heavy-duty retrofit, analog closed-loop control, highly reliable without bus system

Special industries: Aerospace, military equipment, heavy detection instruments, large precision positioning platform

VI. Suggested accessories and selection

Compatible drivers: Kolmos Goldline, B-800, AX-5000; third-party 115VDC heavy-duty analog DC servo drivers

Recommended cables: 4×6mm² (power), 5×0.75mm² (feedback), heavy-duty shielded twisted pair

Maintenance: Brushes can be replaced quickly on-site, supports precise commutator grinding, extends the overall machine life

Comparison selection: Compared with TT-2953-4011-B (NEMA 34), torque increases by 85%, power increases by 90%; compatible with heavier loads, larger installation space scenarios.

VII. Summary of product advantages

TT-4205-4017-C is NEMA 42, 115VDC, 55.2Nm, 14.5V/krpm ultra-sensitive analog speed feedback, IP54, F-class insulation, 35mm heavy-duty keyway shaft, industrial-grade ultra-long life standard high-power DC servo. Core advantages: ultra-high torque density, heavy-duty stability, ultra-low ripple speed feedback, ultra-long life, heavy-duty standard interface. Perfectly meets the drive requirements of industrial-level ultra-heavy, high precision, high reliability, analog closed-loop equipment, is the preferred industrial-grade drive for old-fashioned industrial servo heavy-duty upgrade, heavy-duty automation equipment.