Kollmorgen TT-2045-3026-A DC Servo Motor (Internal Rotor High Voltage Extended Type)

I. Product Overview

TT-2045-3026-A is a Kollmorgen Inland TT series internal rotor structure, high voltage extended type, brushless DC servo motor with a built-in high sensitivity coaxial analog tachometer generator. This model adopts the NEMA 23 (60mm) standard frame, 220VDC high voltage power supply, 12.5Nm rated torque, 5000rpm maximum speed, IP41 protection, 12.7mm optical shaft, dual circular connectors, dual PTC thermal protection, and is mainly designed for 220V high voltage DC busbars, medium and large power precision positioning, continuous heavy-load operation, high-reliability analog servo, etc. in industrial scenarios.

II. Model Code Interpretation (TT-2045-3026-A)

TT: Kollmorgen DC Servo Motor + Built-in Coaxial Tachometer Generator Standard Series

2045:

20: Frame Diameter Base Code (2.0 inch level, NEMA 23 standard, 60mm × 60mm)

45: Motor Length / Structure Code (Extremely Long Body, Ultra High Torque Internal Rotor Structure)

3026:

30: Armature Winding Specification (30th High Voltage Special Winding, 220VDC Rated Voltage)

26: Tachometer Generator Specification (26th Ultra High Sensitivity, Ultra Low Ripple Analog Tachometer Feedback)

A:

Installation / Shaft / Protection / Connection: A-type square flange installation, 12.7mm optical shaft (without key slot), IP41 protection, dual circular connectors (power / feedback separation), built-in dual PTC thermistor thermal protection

III. Core Technical Parameters

(1) Electrical Parameters (DC Servo)

Rated Voltage: 220VDC (compatible with 200~240VDC wide voltage)

Continuous Stalling Torque: 12.5Nm (9.2lb-ft)

Peak Torque: 37.5Nm (3× Overload, Short Time)

Continuous Current: 14.8A

Peak Current: 44.4A

Torque Constant (Kt): 0.84Nm/A

Reverse Electromotive Force Constant (Ke): 14.8V/1000rpm

Armature Resistance: 0.92Ω

Armature Inductance: 0.85mH

Rated Speed: 3500rpm

Maximum Speed: 5000rpm

Regulation Mode: Ultra Long Life Precious Metal Brush (Low Spark, Low Maintenance)

Insulation Class: F Grade (155℃)

Thermal Protection: Built-in Dual PTC Thermistors (Over Temperature Cut-off Protection)

(2) Tachometer Parameter

Feedback Type: Coaxial DC Tachometer Generator (Pure Analog, No Power Supply Required)

Output Sensitivity: 7.5V/1000rpm (±0.3% Linearity)

Output Ripple: <0.8% (Peak-to-Peak)

Linearity: ±0.3% (Full Speed Range)

Output Impedance: <60Ω

(3) Mechanical Parameters

Frame Size: NEMA 23 (60mm × 60mm Square Flange)

Shaft Diameter: 12.7mm (1/2") (Optical Shaft, No Key Slot)

Rotor Inertia: 0.0011kg·m²

Overall Weight: 6.2kg

Bearings: Double Row Precision Heavy Load Ball Bearings

Mechanical Life: ≥20,000 Hours (Rated Conditions)

Cooling Method: Natural Convection (TENV)

(4) Environment and Connection

Protection Grade: IP41 (Dustproof, Vertical Water Drop Protection)

Operating Temperature: -20℃ ~ +65℃ Storage temperature: -40℃ ~ +85℃

Connector: 2× circular connectors (power, feedback separation)

Certifications: CE, UL, cURus, RoHS

IV. Core Product Features

High-voltage high-torque inner rotor design

220VDC high-voltage input, 60mm body output 12.5Nm continuous torque, torque density is 40% higher than that of low-voltage motors of the same size, the inner rotor structure has the winding directly attached to the casing, with high heat dissipation efficiency, supporting continuous operation under heavy load.

Super long-life reliable commutation system

Special precious metal composite brushes and high-precision commutators are used, with extremely low sparks and minimal wear, the lifespan is 50% higher than standard brushes, suitable for 24-hour uninterrupted, highly reliable industrial scenarios.

Ultra-high precision analog speed feedback

26-pin specification speed sensor, 7.5V/krpm ultra-high sensitivity, <0.8% ultra-low ripple, ±0.3% ultra-high linearity, pure analog signal, perfectly compatible with 220V high-voltage analog servo controllers, achieving ultra-fast response and ultra-stable speed.

Industrial-grade heavy-load structure

Full-metal body, heavy-load bearings, IP41 protection, dual PTC thermal protection, suitable for dusty, oily, and vibrating harsh environments, 220V high-voltage busbar compatible with high-power equipment, long-distance wiring.

Standard industrial interface

NEMA 23 standard flange, 12.7mm standard shaft, 220VDC, dual-separation connectors, highly versatile, easy installation, supports keyway processing customization.

VII. Typical Application Scenarios

Medium-large power industrial machines: CNC milling machines, grinding machines, machining centers, precision worktables, textile machinery

Industrial robots: medium-sized joint drives, mechanical arms, handling robots, assembly robots

Automation equipment: packaging machinery, printing machinery, cable equipment, rubber and plastic machinery, food machinery

High-voltage analog servo system: retrofit of old industrial high-voltage servo, military high-voltage analog quantity control, high-reliability without bus scenarios

Precision instruments: coordinate measuring machines, laser cutting equipment, inspection instruments, optical positioning platforms

VIII. Matching and Selection Suggestions

Compatible drivers: Kormogam GOLDLINE 220V, B-1000 series; third-party 220VDC analog DC servo drivers

Recommended cables: 4×4.0mm² (power, shielded), 8×0.75mm² (feedback), shielded twisted pair

Maintenance: Brushes can be replaced quickly on-site, support commutator grinding, significantly extending lifespan

Comparison selection: Compared with TT-2043 series (110VDC), higher voltage, greater torque, stronger power; compared with TT-4000 series (NEMA 42), smaller size, compatible with standard electrical control cabinets.

IX. Summary of Product Advantages

TT-2045-3026-A is a standard high-voltage DC servo with NEMA 23, 220VDC, 12.5Nm torque, inner rotor efficient heat dissipation, 7.5V/krpm ultra-high precision speed feedback, IP41, F-class insulation, 12.7mm shaft, ultra-long lifespan brushes. Core advantages: high-voltage high-torque density, inner rotor efficient heat dissipation, ultra-long lifespan reliability, ultra-high precision analog speed feedback, industrial-grade heavy-load structure. Perfectly meets the drive requirements of industrial-grade 220V high-voltage, medium-large power, high precision, high reliability, analog closed-loop equipment, is the ideal choice for high-power automation equipment and high-voltage servo system upgrades.