Right Angle Servo Gearbox – AT-4M Shaft Input Right Angle Gearbox

Product Overview

The AT-4M Series Right Angle Servo Gearbox is a high-precision right-angle speed reducer designed for demanding automation environments that require compact size, high torque output, and exceptional transmission efficiency. This series uses a spiral bevel gear structure combined with a high-efficiency planetary gearbox mechanism, making it ideal for servo-motor applications that require stable output, long service life, and low backlash.

Manufactured with high-grade SCM415 nickel-chromium alloy steel, carburized and hardened to HRC 60, the AT-4M right-angle servo reducer provides outstanding durability and rigidity. With frame sizes ranging from 55mm to 220mm, output torque from 15Nm to 1600Nm, and reduction ratios from 1:3 to 1:10 (single stage) and 1:12 to 1:100 (two-stage), this right angle servo gearbox series offers unmatched versatility for machine builders and system integrators.

Engineered for industrial automation, CNC machinery, packaging systems, robotics, AGV/AMR vehicles, and semiconductor equipment, the AT-4M right angle servo gearbox delivers precision motion control under fluctuating loads. All five mounting surfaces support installation, allowing flexible integration even in limited-space environments. The series is available in solid shaft, dual output shaft, hollow shaft, hollow flange, and taper-lock versions to accommodate multiple machine designs.

With its low-backlash helical bevel gearing and high-efficiency planetary reduction, the AT-4M series right angle servo gearbox ensures smooth torque transmission, reduced vibration, and accurate positioning even under high acceleration or frequent start-stop cycles. Its rigid construction, optimized bearing arrangement, and maintenance-free lubrication provide long-term reliability in continuous-duty industrial environments. Suitable for high-speed indexing, synchronized multi-axis systems, and precision servo applications, this right angle servo gearbox, right-angle planetary gearbox, and spiral bevel gear reducer delivers a perfect combination of compact design, high torque density, and exceptional efficiency, meeting the demanding requirements of modern automation systems worldwide.

For users seeking technical references about gear mechanisms, you can explore:

Key Features

  • High Strength & High Precision
    The AT-4M Series adopts a precision spiral bevel gear made of SCM415 alloy steel.
    Carburizing and quenching increase hardness to HRC 60, ensuring long-term durability.
    Advanced grinding process keeps backlash at ≤6 arcmin, boosting precision for servo-motor control.
  • High Efficiency Right-Angle Transmission
    The AT-4M right angle servo gearbox combines a spiral bevel gear set with a planetary gear mechanism.
    Overall efficiency is ≥98%, minimizing energy loss and improving system responsiveness.
  • High Rigidity & Heavy Load Capacity
    Dual-tapered roller bearings reinforce the output structure, making it suitable for applications with frequent load fluctuations.
    Excellent radial and axial load ratings extend gearbox lifespan under extreme operating conditions.
  • Compact Size, Space-Saving Design
    Right-angle output reduces the machine footprint.
    Five-surface installation allows flexible layout, perfect for enclosed automation systems.
  • Rich Output Configurations
    Available output types include:
    Single output shaft
    Dual output shaft
    Hollow shaft
    Hollow flange
    Taper-lock hollow shaft
    Screw linear type
    Threaded linear type
    This makes the AT-4M right angle servo gearbox adaptable to various actuator designs.

Technical Information

SpecificationUnitStageRatioAT065AT075AT090AT110AT140AT170AT210AT240AT280
Rated Output Torque / T2NNm11254578150360585130021503200
Rated Output Torque / T2NNm11.5254578150360585130021503200
Rated Output Torque / T2NNm12244268150330544122020103050
Rated Output Torque / T2NNm13183354120270450102016502850
Rated Output Torque / T2NNm1413284810022437686014102300
Rated Output Torque / T2NNm151225408519632074012102000
Max Acceleration Torque / T2BNm11~51.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque1.5×Rated Output Torque
Max Acceleration Input Speed / n1srpm11~5750065005500450035003000220020001700
Backlasharcmin11~5≤6≤6≤6≤6≤6≤6≤6≤6≤6
Allowable Radial Force / Fr (Input Shaft d1)N11~570095014502100270038007800960010500
Allowable Radial Force / Fr (Output Shaft d2)N11~590011001700270048006600115001600018000
Allowable Axial Force / Fa (Input Shaft d1)N11~5350425725105013501900390048005250
Allowable Axial Force / Fa (Output Shaft d2)N11~5450550850135024003300575085009000
Service Lifehr11~520000*20000*20000*20000*20000*20000*20000*20000*20000*
Efficiency / η%11~5≥98%≥98%≥98%≥98%≥98%≥98%≥98%≥98%≥98%
Operating Temperature°C11~5-10~90-10~90-10~90-10~90-10~90-10~90-10~90-10~90-10~90
Lubrication–11~5Fully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic GreaseFully Synthetic Grease
Noise Level (n1=1500rpm, No load)dB(A)11~5≤68≤70≤74≤76≤77≤78≤80≤82≤83
SpecificationUnitStageRatioAT065AT075AT090AT110AT140AT170AT210AT240AT280
Rotary Inertiakg·cm²110.511.303.167.7023.5758.99195.40369.34799.12
Rotary Inertiakg·cm²11.50.641.162.826.7419.3749.28155.45283.58595.78
Rotary Inertiakg·cm²120.441.112.706.3117.7545.35140.24249.74511.76
Rotary Inertiakg·cm²130.431.092.666.1717.1844.01134.95237.71483.06
Rotary Inertiakg·cm²140.431.092.656.1317.0643.70133.58234.72476.26
Rotary Inertiakg·cm²150.431.092.656.1217.0243.60133.14233.67473.58
Model No.UnitStageRatioAT065AT075AT090AT110AT140AT170AT210AT240AT280
L Serieskg11~52.64.26.811.619.834.866.298.1155.7
L1 Serieskg11~52.64.16.711.519.534.265.198.6153.4
H Serieskg11~52.53.96.411.018.131.660.089.4143.4
C Serieskg11~52.84.26.911.419.633.763.397.9149.1
R1 Serieskg11~52.64.16.711.519.534.265.198.6153.4
LM Serieskg11~53.55.69.015.224.142.481.4122.0190.9
RM Serieskg113.55.69.015.224.142.481.4122.0190.9
4M Serieskg113.55.69.115.424.842.682.5123.5193.3
AT Series Axle input steering gear-4M-Dimensions

AT-4M Series Catalog (PDF)

Dimensional Drawings

3D CAD Models (STEP/IGES)

Installation & Maintenance Manual

Applications

  • Industrial Automation Equipment: Pick-and-place systems; Linear modules; Smart manufacturing lines
  • Robotics & AGV/AMR Motion Systems: Mobile robots; Collaborative robot joints; Articulated arms with space constraints
  • CNC & Machine Tools: Right-angle spindle drives; Automatic tool changers (ATC); High-rigidity positioning systems
  • Packaging & Printing Machinery: Cutting, slitting, laminating machines; Labeling and conveyor systems
  • Semiconductor & Medical Equipment: Wafer handling systems; Inspection machines; Precision positioning mechanisms

Contact Us

Request a quote for AT-4M series right angle servo gearbox. Please fill out the form below, and our engineering team will respond with detailed specifications, pricing, and lead time.

Related Products