GGM K35-3429 & K35-3448 Series Planetary Geared Motors

GGM K35-3429 & K35-3448 Series Planetary Geared Motors

The GGM K35-3429 and K35-3448 are two DC Planetary Geared Motor series sharing a common Ø35mm planetary gearhead platform. These units feature a Ø6mm D-cut output shaft, four M3 mounting holes, and 13 gear ratios, making them ideal for compact drive assemblies requiring low speeds and torque up to 12kgf·cm.

The K35-3429 utilizes a 29mm motor length with a weight of 90g, suitable for space-constrained applications. The K35-3448 uses a 48mm motor length, weighs 140g, and offers higher motor torque in many configurations. Both series are available in 12V DC and 24V DC versions with optional encoder support.

Key Features

Ø35mm Planetary Gearhead

The gearhead has an outer diameter of Ø35mm. The Ø6mm output shaft features a D-cut design with a 5.5mm flat section and an extension length of 19.3 ± 0.5mm.

The front face includes four M3 threaded holes (7mm depth) arranged on a Ø26mm PCD. According to GGM specifications, the gearhead output shaft rotates in the same direction as the motor.

Two Motor Lengths

• K35-3429 Series: 29mm motor length, 90g weight.

• K35-3448 Series: 48mm motor length, 140g weight.

Both series share the same gearhead dimensions, output shaft, and gear ratio range but differ in motor length, weight, and performance characteristics.

Multiple Motor Speed Options

Each series offers six motor models:

• S1 and S2 groups: 5,200rpm no-load speed.

• T1 and T2 groups: 7,500rpm no-load speed.

• P1 and P2 groups: 9,000–9,500rpm no-load speed (varies by series).

The suffix 1 denotes 12V DC versions, and 2 denotes 24V DC versions as listed in the catalog.

13 Gear Ratios

Available gear ratios include:

1/5, 1/14, 1/19, 1/27, 1/51, 1/71, 1/100, 1/139, 1/189, 1/264, 1/369, 1/516, and 1/721.

Output speed at peak efficiency ranges from 6 to 1,600rpm, depending on the motor and gear ratio.

Optional Incremental Encoder

KD3429 and KD3448 motors are available with an optional encoder (suffix -E). The catalog specifies a 20-pole, 10-pulse incremental encoder using a 6-pin connector and open-collector output.

Quick Comparison: K35-3429 vs. K35-3448

The K35-3429 is suitable when a short overall length is prioritized. The K35-3448 is ideal when a longer motor and higher torque are required for low to medium gear ratio groups.

General Specifications

Gear Ratio and Planetary Gearhead Length

When calculating installation space, add the gearhead length L to the motor length (29mm or 48mm) and the 8mm rear section shown on the drawing.

Encoder Versions

KD3429 and KD3448 motors can be supplied with the -E suffix, for example:

• KD3429S1-E

• KD3429T2-E

• KD3429P1-E

• KD3448S1-E

• KD3448T2-E

• KD3448P2-E

How to Read GGM Part Numbers (e.g., K35-0100-KD3448T2)

Examples:

• K35-0005-KD3429S1: 1/5 ratio, KD3429S1 motor, 12V DC.

• K35-0100-KD3448T2: 1/100 ratio, KD3448T2 motor, 24V DC.

• K35-0721-KD3448P1: 1/721 ratio, KD3448P1 motor, 12V DC.

When requesting a quote, please provide the full gearhead part number, gear ratio, motor model, and encoder requirements if applicable.

Applications

GGM K35-3429 and K35-3448 are suitable for DC drive assemblies requiring various speed and torque options, including:

• Robotics and actuators.

• Feeding or dosing systems.

• Opening/closing mechanisms in automation equipment.

• Turntables and low-speed rotation mechanisms.

• Testing and measurement equipment.

• Mechanisms requiring speed or relative position feedback via encoder.

• Machines using 12V or 24V DC power.

• OEM drive assemblies requiring torque up to 12kgf·cm.

Actual suitability must be verified based on speed, load torque, operating duty cycle, shaft load, and control method.

How to Select GGM K35-3429 and K35-3448

First, select the motor length and required torque. The K35-3429 is suitable for limited installation space, while the K35-3448 provides higher motor torque in many configurations.

Next, determine the power supply:

• Suffix 1: 12V DC.

• Suffix 2: 24V DC.

S-group is suitable for lower motor speed requirements, T-group for medium speed, and P-group for higher speeds as per the catalog table. Selection must be based on the output speed after the gearhead, not just the motor speed.

Then, select the gear ratio based on required speed and torque:

• 1/5–1/27: Relatively high output speed.

• 1/51–1/139: Balance between speed and torque.

• 1/189–1/721: Low speed and higher torque.

When feedback signals are needed, clearly specify the -E encoder version and verify sensor voltage, open-collector output type, and controller pulse count.

Notes on Replacement

When replacing, verify the correct K35-3429 or K35-3448 series, motor length, voltage, S/T/P speed group, and gear ratio.

Both series share the same gearhead interface but have different motor characteristics. Do not directly replace a KD3429 with a KD3448 without checking current, total length, and power supply capacity.

Different gear ratios have different gearhead lengths. Verify length L, Ø6mm D-cut shaft, four M3 threaded holes, and Ø26mm PCD before installation.

Do not use stall torque as continuous operating torque. For encoder versions, confirm the 6-pin wiring diagram before applying power.

MDriveTech Supplies Genuine GGM K35-3429 & K35-3448 Series

MDriveTech provides GGM K35-3429 and K35-3448 series planetary geared motors, offering support for verifying voltage, motor models, gear ratios, speed, torque, encoders, and installation dimensions according to your specific requirements.

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