SEX120 In-Line Compact Planetary Gearbox | Cost-Effective Low-Backlash Servo Drive

Maximize your machinery efficiency and control project overheads with the Planetary gear reducer SEX120, a highly balanced value solution within our premier SEX Series Planetary Gearbox lineup. Explicitly engineered to provide high power-density within a budget-conscious system framework, this Cost-Effective Planetary reducer delivers a dependable rated output torque profile of 208NM to 330NM enclosed in a space-saving 120mm inline housing. Built for direct integration with modern high-speed servo and stepper motors, its multi-planet configuration shares driving forces evenly to eliminate unbalanced shaft deflection. Featuring standard low-backlash accuracy levels reaching ≤8 arcmin on single-stage assemblies, the SEX120 delivers steady tracking accuracy, an ultra-quiet operating floor, and long-term mechanical reliability.

Engineering & Kinematic Performance Matrix

Torque Profile: 208NM – 330NM Constant Rated Output Torque

Single-Stage Ratios: 3 / 4 / 5 / 6 / 7 / 8 / 10

Dual-Stage Ratios: 12 / 15 / 16 / 20 / 25 / 30 / 35 / 40 / 50 / 60 / 70 / 80 / 100

Single-Stage Backlash: ≤ 8 arcmin (Standard Low-Backlash Tier)

Dual-Stage Backlash: ≤ 10 arcmin (Standard Low-Backlash Tier)

Acoustic Emission: Whisper-Quiet Running Floor ≤ 63 dB

Lubrication System: Factory-Sealed Lifetime Synthetic Gear Grease

Environmental Seal: IP65 Ingress Protection Certified

Thermal Threshold: Wide Continuous Envelope From -10°C up to +90°C

Mounting Versatility: Universal Multi-Directional / Omni-Directional Orientation

Kinematic Integrity & Automation Synergy

Mechanical Component	Engineering Logic	Process Synergy
Precision Helical Train	Coaxial Mesh Logic \| High-Contact Tooth Engagement	Distributes load forces evenly across smooth-meshing gear profiles to reduce acoustic vibrations down to an ultra-quiet ≤63 dB ceiling.
IP65 Viton Lip Seals	Enclosure Shielding Logic \| Particulate & Moisture Defense	Forms a secure, dust-tight mechanical boundary that completely blocks production dust and fluid splashes from reaching internal gear teeth.
High-Shear Synthetic Grease	Thermal Stability Logic \| Lifetime Boundary Lubrication	Maintains an optimal oil film layer across high cycling speeds without breakdown or separation throughout the -10°C to +90°C threshold.

Structural Engineering & Motion Profile Protection

Inline Space-Saving Layout & True Axial Balance

In high-speed production machinery and automated packaging frameworks, keeping perfect axial alignment is crucial for preventing shaft vibration and bearing fatigue. The SEX120 addresses these engineering demands through its balanced inline coaxial design. This straight-line installation allows driving servo motors to transfer output forces up to 330NM directly through the central shaft axis, keeping the entire drive profile highly compact and structurally stable.

Value-Driven Low Backlash & Rigid Gear Meshing

Providing steady running synchronization and excellent structural resistance to tooth deflection are core principles of our 120mm inline gear design. Machined with high-tensile, surface-hardened helical gear teeth housed inside a rugged casing, this gearbox manages rapid indexing cycles and sudden emergency braking profiles cleanly. This matched gear interface yields a standard single-stage backlash rating within ≤8 arcmin, delivering reliable position tracking for general factory automation.

Omni-Directional Stability & Clean Industrial Finish

General-purpose industrial automation elements must blend versatile installation capability with long-term housing strength. Featuring a flexible omni-directional universal mounting profile, the SEX120 system configures easily into specialized machinery frameworks at any design angle. The rugged exterior housing provides an effective protective shield against physical floor impacts while delivering a clean look that matches global engineering standards.

Fulfillment & Engineering Excellence

As a leading global manufacturing supplier for efficient system integrators and precision machine builders, we execute complete quality assurance on every single SEX120 configuration:

Technical Rigor: Each completed unit undergoes 100% factory verification testing, verifying low noise parameters (≤63 dB), IP65 sealing effectiveness under stress, and dual-direction torque stability.
Reinforced Origin: Crafted from premium high-tensile alloy steel with precision shaved gear teeth, gas-nitrided to secure exceptional surface wear resistance backed by a ductile, impact-absorbing core.
Customization Logic: Fully customizable input adaptation flanges to fit major international servo and stepper motor brands, adaptable output shafts (keyed, smooth, or splined), and specialty grease filling optimization upon request.

Technical Support FAQ

Q1: Why is the SEX120 classified as a cost-effective planetary reducer for general industrial automation?

A: The SEX120 focuses on balancing mechanical torque density with cost-optimized engineering. By matching a standard low-backlash specification (≤8 arcmin) with efficient high-volume manufacturing practices, it provides excellent value for standard positioning lines that do not require sub-arcminute ultra-precision.

Q2: What enables the SEX120 inline gearbox to maintain an ultra-quiet running noise of ≤63 dB?

A: The remarkably quiet running performance is achieved through precision helical gear grinding and advanced tooth profile micro-shaving. This maximizes the contact ratio during tooth meshing and eliminates high-frequency acoustic harmonics during high-speed servo cycles.

Q3: Can the SEX120 be safely installed vertically in quick-reversing conveyor automation systems?

A: Yes. Thanks to its universal omni-directional mounting logic and fully sealed IP65 grease enclosure, the SEX120 operates reliably at any installation angle without risking lubricant migration or compromising internal bearing lubrication pathways.