EVL Right Angle Planetary Gearbox | Low Backlash Servo Gearbox

Product Overview

The EVL High-Precision Right Angle Planetary Gearbox is engineered for advanced automation environments where high torque density, superior accuracy, compact installation, and long-term durability are essential. Built using premium alloy steel, precision-ground helical gears, and an integrated right-angle design, the EVL series provides exceptionally smooth and quiet operation while delivering powerful performance in heavy-duty motion control systems.

Designed with backlash lower than 3 arcmin, the EVL right angle planetary gearbox ensures exceptional repeatability and precise positioning—critical for CNC machining, robotics, packaging machinery, and automated production equipment. Helical gear geometry reduces operational noise and vibration, enabling stable transmission at high input speeds up to 6000 rpm. The right-angle configuration maximizes space efficiency, allowing engineers to install the gearbox inside compact frames, tight modular equipment, and multi-axis automation systems.

The EVL series right angle planetary gearbox uses high-viscosity synthetic lubricants formulated to resist separation and leakage even under high load, high temperature, and 24/7 continuous operation. This maintenance-free lubrication system ensures the gearbox remains clean, sealed, and stable for the full duration of its 21,000-hour service life. Reinforced cross-roller bearings dramatically increase rigidity and support high radial and axial loads, enabling the gearbox to maintain accuracy during rapid acceleration, deceleration, and torque-intensive processes.

With an IP65 protection rating, the EVL right angle planetary gearbox is built to withstand harsh industrial environments such as dust, humidity, and occasional splash exposure. It mounts easily to standard servo motors from global brands—including models following NEMA and IEC sizing guidelines. For engineering teams that require trusted design standards, references such as ISO 9409-1 rotary mechanical interface guidelines (https://www.iso.org/standard/70969.html) help validate compatibility and performance expectations.

Whether used in high-speed automation, robotics, or precision manufacturing, the EVL right angle planetary gearbox offers the performance and longevity demanded by today’s Industry 4.0 systems. Its reliability is supported by real-world engineering data and best practices from global automation leaders such as Siemens (https://www.siemens.com) and standards outlined by Google Reliability Engineering (https://sre.google) for equipment uptime and system dependability.

Key Features

Ultra-Low Noise Helical Gear Design
The EVL series right angle planetary gearbox adopts precision-ground helical gears, which provide smoother tooth engagement, reduced vibration, and significantly quieter operation—ideal for laboratories, clean factories, and applications requiring consistent acoustic control.
High Precision With Backlash Under 3 Arcmin
Achieve outstanding repeatability and accuracy essential for CNC cutting, micro-movement control, and advanced robotics. The EVL gearbox maintains tight tolerance positioning even after long-term operation.
High Rigidity & High Torque Output
Integrated cross-roller bearings deliver superior torsional rigidity and allow the gearbox to handle massive radial and axial loads, improving stability during high acceleration and deceleration cycles.
Flexible Motor Mounting System
The universal flange and connector system enables fast assembly with most servo motors, following commonly referenced motor standards such as NEMA (https://www.nema.org) for dimensional guidelines.
No Lubricant Leakage
The use of premium synthetic grease ensures long-term lubrication stability, preventing grease separation or leakage even under elevated temperatures or extended duty cycles.
Maintenance-Free for Service Life
With a service life of up to 21,000 hours, the EVL gearbox requires no internal lubrication replacement, reducing maintenance costs and machine downtime.

Specs	Unit	Stage	Ratio	EVL070	EVL090	EVL120	EVL145	EVL180
Rated Output Torque / T2N	Nm	1	3	45	130	230	450	900
Rated Output Torque / T2N	Nm	1	4	50	140	290	542	1050
Rated Output Torque / T2N	Nm	1	5	60	160	330	650	1200
Rated Output Torque / T2N	Nm	1	6	55	150	310	600	1100
Rated Output Torque / T2N	Nm	1	7	50	140	300	550	1100
Rated Output Torque / T2N	Nm	1	8	45	120	260	500	1000
Rated Output Torque / T2N	Nm	1	9	40	100	230	450	900
Rated Output Torque / T2N	Nm	1	10	40	100	208	342	588
Rated Output Torque / T2N	Nm	1	14	45	130	230	450	900
Rated Output Torque / T2N	Nm	1	20	50	140	290	542	1050
Rated Output Torque / T2N	Nm	2	15	55	160	330	650	1200
Rated Output Torque / T2N	Nm	2	20	50	150	310	600	1100
Rated Output Torque / T2N	Nm	2	25	60	160	330	550	1100
Rated Output Torque / T2N	Nm	2	30	45	120	260	500	1000
Rated Output Torque / T2N	Nm	2	35	40	100	230	450	900
Rated Output Torque / T2N	Nm	2	40	50	140	300	650	1200
Rated Output Torque / T2N	Nm	2	50	60	160	330	550	1100
Rated Output Torque / T2N	Nm	2	70	45	120	260	500	1000
Rated Output Torque / T2N	Nm	2	80	40	100	230	450	900
Rated Output Torque / T2N	Nm	2	100	40	100	208	342	588
Rated Output Torque / T2N	Nm	2	120	—	128	305	495	1095
Rated Output Torque / T2N	Nm	2	140	—	128	295	525	1095
Rated Output Torque / T2N	Nm	2	160	—	118	255	515	995
Rated Output Torque / T2N	Nm	2	180	—	98	225	445	895
Rated Output Torque / T2N	Nm	2	200	—	98	225	445	895
Max Output Torque / T2max¹	Nm	1,2	3-200	3Times of Nominal Output Torque	–	–	–
Rated Input Speed / n1n	rpm	1,2	3-200	3000	3000	3000	2500	2000
Max Input Speed / n1m	rpm	1,2	3-200	6000	6000	5500	4500	4000
Micro Backlash P0	arcmin	1	3-20	≤2	≤2	≤2	≤2	≤2
Micro Backlash P0	arcmin	2	15-200	≤4	≤4	≤4	≤4	≤4
Precision Backlash P1	arcmin	1	3-20	≤4	≤4	≤4	≤4	≤4
Precision Backlash P1	arcmin	2	15-200	≤6	≤6	≤6	≤6	≤6
Standard Backlash P2	arcmin	1	3-20	≤6	≤6	≤6	≤6	≤6
Standard Backlash P2	arcmin	2	15-200	≤8	≤8	≤8	≤8	≤8
Torsional Rigidity	Nm/arcmin	1,2	3-200	3	14	25	56	140
Max Radial Force / Frmax²	N	1,2	3-200	1300	3200	6750	9400	14500
Max Axial Force / Famax²	N	1,2	3-200	700	1580	3300	4700	7200
Service Life	hr	1,2	3-200	21000h	–	–	–	–
Efficiency / η	%	1	3-20	≥97%	–	–	–	–
Efficiency / η	%	2	25-200	≥93%	–	–	–	–
Weight	kg	1	3-20	1.5	6.4	13	24.5	51
Weight	kg	2	25-200	2.1	7.8	14.2	27.5	54
Operating Temperature	℃	1,2	3-200	(-15℃~+90℃)	–	–	–	–
Lubrication	–	1,2	3-200	Synthetic Grease	–	–	–	–
Protection Class	–	1,2	3-200	IP65	–	–	–	–
Mounting Position	–	1,2	3-200	Any Direction	–	–	–	–
Noise Level (n1=3000rpm, No load)	dB(A)	1,2	3-200	≤65	≤68	≤68	≤70	≤72
Moment of Inertia	kg·cm²	1	3-10	0.35	2.25	6.84	23.4	68.9
Moment of Inertia	kg·cm²	1	14-20	0.09	1.87	6.25	21.8	65.6
Moment of Inertia	kg·cm²	2	15-100	0.07	0.35	2.25	6.84	23.4
Moment of Inertia	kg·cm²	2	120-200	0.31	1.87	6.25	21.8	–

EVL High Precision Right Angle Planetary Gearbo dimensionx stage-1

EVL High Precision Right Angle Planetary Gearbo dimensionx stage-2

EVL Detailed Specifications Table

Motor Mounting Guide (NEMA & IEC Reference)

Installation & Maintenance Manual

EVL CAD Drawings (STEP / IGES)

Certification Documents

Applications

Packaging Machinery: The EVL gearbox excels in high-speed, continuous packaging lines requiring fast indexing, smooth motion, and accurate positioning. Its robust torque output and stable performance help maintain consistent labeling, sealing, and cutting accuracy.
CNC and Machining Automation: The ultra-low backlash design is perfect for servo-driven axes, tool changers, rotary tables, and high-precision positioning mechanisms. With excellent torsional rigidity, the EVL series ensures stable machining results and repeatability.
Robotics and Automation Systems: Compact size, right-angle layout, and high torque density make the EVL ideal for robotic joints, pick-and-place systems, and SCARA robot arms that require minimal inertia and high efficiency.
Laser Cutting & Engraving Equipment: Helical gear precision reduces vibration and enhances motion smoothness, improving laser cutting quality and ensuring extremely fine motion control.
Industrial Machinery & Material Handling: High load capacity and durability support conveyor systems, indexing tables, multi-axis manipulators, and automated warehousing systems.