EP-Right Angle Planetary Gearbox

The EP right angle planetary gearbox delivers high-torque 90-degree power transmission in a compact, low-backlash housing. Built from hardened alloy steel gears with case-hardened spiral bevel stages, this unit is engineered to ISO and DIN standards for continuous industrial operation in sectors including cranes, mining, packaging, and CNC automation. Buyers in Colombia and throughout Latin America benefit from direct compatibility with major motor interfaces, full technical documentation, and a global support network.

Category: EP-Right Angle Planetary Gearbox

GET QUOTE

Description

1. Technical Specifications of right angle planetary gearbox

Key Features
Torque Range	1000-450.000 Nm
Transmissible Mechanical Power	up to 150 kW
Gear Ratios	6.9-9.000
Gear Unit Versions	Right angle (with a spiral bevel gear set)
Input Configurations	Flanged axial piston hydraulic motors Hydraulic orbit motors IEC and Nema motor adaptors Solid input shaft

Type	Model variants	Torque Nm
NB300R	NB300R2, NB300R3, NB300R4	1000
NB301R	NB301R2, NB301R3, NB301R4	1750
NB303R	NB303R2, NB303R3, NB303R4	2500
NB305R	NB305R2, NB305R3, NB305R4	5000
NB306R	NB306R2, NB306R3, NB306R4	8500
NB307R	NB307R2, NB307R3, NB307R4	12500
NB309R	NB309R2, NB309R3, NB309R4	18000
NB310R	NB310R2, NB310R3, NB310R4	25000
NB311R	NB311R2, NB311R3, NB311R4	40000
NB313R	NB313R2, NB313R3, NB313R4	55000
NB315R	NB315R3, NB315R4	100000
NB316R	NB316R3, NB316R4	135000
NB317R	NB317R3, NB317R4	170000
NB318R	NB318R4	250000
NB319R	NB319R4	350000
NB321R	NB321R4	500000

Gearbox Planetary-products-for-EP-Right Angle Planetary Gearboxes-draft

2. Why choose our Right Angle Planetary Gearbox

The EP Right Angle Gear Drives Planetary Gearbox represents a significant step forward in right-angle gear drive engineering. Unlike standard inline reducers, this unit integrates a precision spiral bevel stage at the input with a robust planetary gear train at the output — resulting in a 90-degree transmission that maintains all the advantages of planetary gearing: exceptionally high torque-to-weight ratio, concentric load distribution across three or more planet gears, and a rigidity that suits both dynamic servo applications and continuous-duty industrial drives.

The housing is manufactured from high-grade ductile iron (GGG50 / QT500), with an internal gear ring that is precision-machined and carburized to a surface hardness of HRC 58–62. The bevel gear pair is CNC-ground to DIN 6 accuracy class, ensuring smooth, low-noise operation even at elevated input speeds. Modular shaft configurations — including keyed solid shaft, hollow shaft with keyway, and splined hollow shaft to DIN 5480 — allow the EP right angle planetary gearbox to integrate directly into virtually any machine platform without custom adapters.

3. Five Key Product Advantages

01 — Ultra-Compact 90° Drive Architecture

The spiral bevel + planetary combination achieves a 90-degree right-angle transmission in a footprint up to 40% smaller than comparable worm gear reducers. This is critical in Colombian industrial facilities — from Bogotá's manufacturing zones to Cartagena's port handling equipment — where space-constrained machine layouts are common. The reduced envelope means easier retrofitting into existing equipment without structural modification.

02 — High Torque Density with Low Backlash

Rated output torques up to 18,000 Nm combined with a backlash specification of ≤ 5 arc-minutes (precision grade available at ≤ 3 arc-min) make this unit suitable for demanding servo drive applications. High torque right angle planetary gearbox performance is achieved through hardened and ground planet gears (20CrMnTi, carburized, HRC 58–62) and a fully pre-loaded output bearing set that minimizes torsional play under reversing loads — a common requirement in CNC rotary tables and robotic positioning systems.

03 — Direct Compatibility with Major Motor Brands

The motor interface flange conforms to IEC standard dimensions, ensuring bolt-on fit with servo motors from Siemens, SEW-Eurodrive, ABB, Yaskawa, and others without machined adapters. Multiple output flange options (ISO 9409 rotary flange, keyed shaft, spline shaft) accommodate the widest range of driven equipment. Buyers seeking a right angle planetary gearbox supplier Colombia benefit from this universal compatibility, which simplifies procurement and reduces spare-part inventory.

04 — Sealed Construction for Harsh Environments

IP65 as standard, with IP67 available on request, means the EP right angle planetary gearbox is fully protected against water jets and dust ingress. Combined with NSK/SKF double-row angular contact output bearings and a lip-seal design at all shaft exits, the unit is well suited to the humid coastal climates of Colombia's Caribbean and Pacific regions, as well as the dusty environments typical of mining and cement operations in the Andean corridor. Operating temperature range: −20°C to +90°C.

05 — Extended Service Life & Low Maintenance

Lifetime lubrication with ISO VG 220 synthetic oil is standard on most frame sizes, eliminating scheduled oil changes for the service life of the gearbox (designed L10 bearing life ≥ 20,000 hours). The modular internal architecture makes field disassembly and inspection straightforward, a practical benefit for maintenance teams in remote Colombian locations. The sealed-for-life design also dramatically reduces contamination risk in food processing and pharmaceutical applications.

4. How Does a Right Angle Planetary Gearbox Work?

The EP-right angle planetary gearbox unit combines two distinct gear stages in a single, integrated housing. At the input end, a set of precision-ground spiral bevel gears redirects the rotational axis by exactly 90 degrees. The drive bevel pinion is fixed to the input shaft; the mating bevel crown gear transfers motion to a secondary shaft that runs perpendicular to the motor axis. This bevel stage is responsible for the right angle redirection, with the spiral tooth profile ensuring smooth, quiet engagement and distributing the tooth load over multiple contact points simultaneously.

The secondary shaft leads directly into the planetary gear stage, which is the primary speed-reduction and torque-multiplication section. A sun gear at the center meshes with three or more equally-spaced planet gears, which orbit within a fixed ring gear (annulus). The output is taken from the planet carrier. Because the torque is shared across several planet gears simultaneously, the load per tooth is dramatically lower than in a single-pair gear reduction — this is what gives the planetary configuration its characteristic high torque density and long fatigue life. The gear ratio is determined by the ratio of ring gear teeth to sun gear teeth: i = (Z_ring / Z_sun) + 1. Available ratios for the EP series span from 3:1 up to 200:1, with multi-stage variants available for extreme reduction requirements.

This architecture is what distinguishes the Right Angle Gear Drives Planetary Gearbox from simpler worm reducers: worm gears are inherently non-back-drivable and typically limited to efficiency values of 40–70%, whereas the bevel-planetary combination achieves transmission efficiency above 95% and supports dynamic reversing loads without self-locking concerns — an important factor for servo-driven axes and crane slewing systems alike.

5. Materials & Manufacturing Standards

Material selection for the EP right angle planetary gearbox follows the principle that the most loaded components receive the most advanced metallurgical treatment. Planet gears, sun gears, and ring gears are all produced from 20CrMnTi low-alloy case-hardening steel (equivalent to AISI 8620 / DIN 21MnCr5). After precision hobbing or CNC grinding, parts undergo a gas-carburizing cycle targeting a case depth of 0.8–1.2 mm, followed by oil quench and low-temperature tempering to achieve a core hardness of 30–38 HRC while maintaining a surface hardness of HRC 58–62. This combination provides excellent bending fatigue strength at the gear root while preserving contact wear resistance on the flank.

The spiral bevel gears are Gleason-type, cut and lapped from AISI 8620 steel, then ground to DIN 6 quality class. Bearing seats are bored with H7 tolerance to ISO 286-1, and rolling-element bearings are selected from the NSK or SKF premium range with C3 internal clearance for thermal robustness. All fasteners conform to ISO 898-1 Grade 10.9. Full material traceability documentation is available upon request for applications subject to industrial certification, including Colombian ICONTEC NTC standards.

6. Application Scenarios

The versatility of the EP right angle planetary gearbox makes it the drive component of choice across a broad spectrum of industries. Below are the primary sectors where this product delivers measurable value, including applications growing rapidly in the Colombian industrial landscape.

Crane & Slewing Systems

Mobile cranes, tower cranes, and harbour cranes rely on high-torque right angle drives to rotate the boom and hoist assembly. The EP right angle planetary gearbox meets the demanding duty cycles described in FEM Section I and ISO 4301 crane classifications. Its high static holding torque and compliance with DIN 3990 fatigue calculations make it a robust choice for Colombia's growing port infrastructure at Barranquilla, Cartagena, and Buenaventura.

CNC Machining & Automation

For planetary gear reducer Colombia CNC machinery applications, the EP right angle planetary gearbox's low backlash (≤ 5 arc-min) and high torsional stiffness ensure precise angular positioning on rotary axes and tilting heads. Servo-driven cutting heads, 4th-axis rotary tables, and multi-axis robotic welding systems in Colombian manufacturing clusters around Medellín and Bogotá all benefit from this level of precision.

Mining & Quarrying Equipment

Colombia's coal, gold, and emerald mining sectors place high demands on drive systems. The 90 degree planetary gearbox heavy duty design handles the extreme radial and axial loads of conveyor drives, crusher positioning, and stacker-reclaimer slewing. The hardened internal components resist abrasive environments, and the sealed IP65/IP67 housing prevents mineral dust ingress that would otherwise shorten bearing life.

Packaging & Food Processing

In packaging lines and food filling machines, compact servo-driven right angle gear drives with low backlash provide the precise index motion needed for high-speed filling, labelling, and capping. Stainless steel output shafts and food-grade lubricant options (NSF H1 compliant) make the EP right angle planetary gearbox suitable for direct food contact zones. The smooth, quiet operation (≤ 65 dB) also contributes to lower workplace noise levels in compliance with Colombia's Occupational Safety Resolution 2400.

Oil, Gas & Energy Infrastructure

Pipeline valve actuators, wellhead rotating equipment, and wind turbine pitch drives all require reliable right angle transmission solutions that survive years of operation with minimal intervention. The EP right angle planetary gearbox's sealed construction and wide temperature tolerance (−20°C to +90°C) make it suited to both Colombia's equatorial highland environments and the hot, humid conditions along the Llanos Orientales hydrocarbon region.

Agricultural & Material Handling

From seed spreaders to sugar-cane harvester drive trains, the ability to redirect power at 90 degrees in a rugged, dust-proof housing is precisely what field-deployed agricultural equipment needs. Combined with PTO shaft drive systems, the EP right angle planetary gearbox enables efficient tractor-powered implement configurations widely used across Colombia's coffee, sugarcane, and banana agricultural regions.

7. Regulatory & Industry Standards

Industrial gearboxes and power transmission equipment are subject to a complex mesh of national and international regulations governing safety, environmental performance, and quality. Buyers in Colombia and across the region should be aware of the following applicable standards and regulations when specifying a right angle planetary gearbox.

Jurisdiction	Standard / Regulation	Relevance to Gearbox
Colombia	NTC 1461 / NTC 3316 (ICONTEC)	National technical norms for mechanical power transmission elements; quality marking requirements
Colombia	Resolution 2400 (MinTrabajo)	Occupational safety code; sets noise (≤ 85 dB) and machinery guarding requirements for driven equipment
Colombia / Latin America	RETIE (Resolution 90708/2013)	Electrical safety regulation; affects motors used with gearboxes; IP rating compliance required
International (ISO)	ISO 6336 / ISO 1328	Gear load capacity calculation; accuracy class for cylindrical and bevel gears
Germany (DIN)	DIN 3990 / DIN 5480	Gear tooth load capacity; spline shaft dimensions — widely referenced in technical trade
EU (CE)	Machinery Directive 2006/42/EC	Required for equipment exported to or sourced from EU; gearbox integrated in machinery must comply
USA (AGMA)	AGMA 2001 / AGMA 6013	Gear tooth strength; helical and spur gear load rating — commonly referenced by North American integrators
International	ISO 9001:2015	Quality management system; EP right angle planetary gearbox manufactured under certified QMS
Marine / Offshore	DNV-GL, ABS, BV classification	Required for port and offshore crane applications; available on special order for EP right angle planetary gearbox
Brazil (ABNT)	NBR 6158 / NBR 6409	Brazilian norms for mechanical power transmission; relevant for re-export or regional projects

8. EP-Right Angle Planetary Gearbox Installation Guide (Step-by-Step)

Proper installation is essential to achieving the rated performance and service life of any right angle planetary gearbox. Follow the procedure below. For large-frame units (EP-200 and above), involve a qualified mechanical engineer and refer to the full technical manual supplied with every unit.

Pre-Installation Inspection: Verify that the gearbox model, gear ratio, output torque rating, and flange dimensions match your design specifications. Check that the unit has not been damaged in transit. Confirm the motor input flange fits the gearbox input without modification.

Mounting Orientation: The EP unit can be installed in any orientation (horizontal, vertical, or inclined) provided the lubrication fill and drain plugs are repositioned accordingly. Confirm correct oil level for the selected orientation using the oil window or dipstick. Vertical shaft-down installation may require additional bearing lubrication — consult the manual.

Motor Coupling: Align the motor shaft to the gearbox input shaft using a dial gauge; radial runout should not exceed 0.05 mm at the coupling face. Torque the input coupling bolts to the specified value (refer to dimensional drawing supplied). Do not apply axial force to the input shaft beyond the rated value.

Output Connection: Mount the driven element (pinion, sprocket, coupling hub) using the appropriate keyway and retaining method. For hollow-shaft models, ensure proper interference fit and locking mechanism per ISO 286-1 H7/k6 guideline. Apply anti-seize compound to hollow shaft bore contact surfaces where stainless steel shafts are used.

Lubrication Check: Confirm the factory fill level of ISO VG 220 synthetic oil. For units ordered with sealed-for-life lubrication (most EP frame sizes EP-050 to EP-160), no additional oil is required. For EP-200 and above, check and top up as specified in the technical sheet before first start-up.

Trial Run & Commissioning: Run at no-load for 30 minutes, checking for unusual noise, vibration, or heat development. Then gradually increase to full load over 2 hours. Measure gearbox body temperature — under normal operating conditions this should not exceed ambient +50°C. If abnormal heat, noise, or vibration is detected, stop immediately and contact the technical support team.

9. About Us

We are a specialized manufacturer and exporter of precision planetary gearbox solutions, with over decades of engineering experience in power transmission systems. Our production facilities are equipped with CNC gear grinding centers, CMM quality inspection equipment, and a dedicated testing laboratory capable of full-load dynamic testing up to 50,000 Nm.

Workshop

10. Related Products & System Compatibility

The EP right angle planetary gearbox is part of a wider drive system ecosystem. For complete system design and one-stop supply, we also manufacture and supply the following complementary products. All components are engineered for direct compatibility and optimized performance when used together.

PTO Shaft Drive Systems

Motors

Servo motor and planetary gearbox system integration

Frequently Asked Questions

Q1. How does a right angle planetary gearbox achieve 90-degree power transmission in industrial automation systems?+

A right angle planetary gearbox combines two gear technologies in one housing: a spiral bevel stage at the input redirects the rotational axis by exactly 90 degrees, and a planetary reduction stage after the bevel pair provides the speed reduction and torque multiplication needed for the application. The bevel gears' helical tooth form ensures smooth, quiet engagement, while the planetary stage distributes load across three or more planet gears simultaneously for high torque density. This design achieves efficiencies above 95% — significantly better than worm gear alternatives — and supports dynamic reversing loads, making it ideal for servo-driven automation axes, CNC rotary tables, and crane slewing drives.

Q2. What maintenance schedule and lubrication intervals are recommended to maximize the service life of a right angle gearbox installed in tropical Colombian conditions?+

In tropical conditions typical of Colombia's coastal and lowland regions — high ambient temperature (25–38°C), elevated humidity, and potential for condensation — the following maintenance schedule is recommended: Check external seals and shaft lip seals for leaks every 1,000 hours or 6 months, whichever comes first. Inspect bolting torque on mounting hardware every 2,000 hours. For sealed-for-life units (EP-050 to EP-160), no oil change is required over the 20,000-hour design life under normal loads; however, inspect for moisture ingress annually in high-humidity environments. For open-top units (EP-200+), change the ISO VG 220 synthetic oil every 6,000 hours or 3 years. If the unit runs continuously at temperatures above +70°C (e.g., near heat sources), shorten the oil change interval to 4,000 hours. Always use the specified synthetic oil — mineral oil has a significantly shorter thermal life and is not recommended in tropical operating conditions.

Q3. What gear ratio options are available for high torque right angle planetary gearbox applications in heavy-duty crane systems?+

The EP right angle planetary gearbox offers gear ratios from 3:1 up to 200:1 in single and two-stage configurations. For crane slewing applications, typical ratios fall between 20:1 and 80:1 depending on the motor speed and required slewing velocity. Heavy-duty crane drives per FEM Section I classification use large-frame units (EP-250 to EP-320) with output torques up to 18,000 Nm and service factors of 1.5–2.0 applied to the nominal load. We recommend providing the full load cycle (maximum torque, average torque, operating hours per year, and starting frequency) so our application engineers can verify the service factor and specify the correct ratio and frame size. Custom ratios outside the standard range are available on request with a 6–8 week manufacturing lead time.

Q4. Which industries in Colombia use compact right angle planetary gearboxes most frequently and what torque ranges are typically needed?+

In Colombia, the heaviest demand for compact right angle planetary gearboxes comes from five main sectors. Port and crane infrastructure (Barranquilla, Cartagena, Buenaventura) typically requires units rated 3,000–18,000 Nm for boom slewing and hoist drives. Coal and mineral mining operations in the Cesar and Boyacá departments use 500–8,000 Nm units for conveyor drives and crusher positioning. Food and beverage manufacturing near Bogotá and Medellín prefers smaller servo-rated units at 50–500 Nm with low backlash. Oil and gas pipeline valve actuators in the Llanos Orientales need medium-duty units at 500–3,000 Nm with high IP ratings. Finally, CNC automation integrators serving automotive and electronics manufacturing clusters use precision-grade units at 50–1,000 Nm with backlash ≤ 3 arc-min.

Q5. How does the EP right angle planetary gearbox compare to a worm gear reducer for the same application in terms of efficiency and service life?+

The efficiency difference is substantial. A worm gear reducer at a 20:1 ratio typically operates at 60–75% efficiency, with the remainder dissipated as heat; this means a significant portion of your motor energy is wasted, increasing operating costs over time. The EP right angle planetary gearbox at the same ratio achieves ≥ 95% efficiency, reducing motor sizing requirements and energy consumption. Additionally, worm gears are self-locking under back-driving loads, which can be a hazard in crane or vertical axis applications if the brake fails. The planetary unit is back-drivable, which allows controlled lowering under gravity with motor regeneration. Service life also favours the planetary design: our L10 bearing life target is ≥ 20,000 hours versus 10,000–15,000 hours typical for worm gear sets under equivalent loading.

Q6. What is the correct way to select a planetary gearbox ratio for a CNC rotary axis to optimize precision and speed in Colombian automation projects?+

Ratio selection for a CNC rotary axis involves balancing three factors: output speed, reflected inertia, and positioning resolution. First, calculate the required output speed (degrees/second) from your servo cycle time to determine the maximum allowable ratio. Second, check that the motor inertia reflected through the gearbox (J_load / i²) falls within 1–5 times the motor rotor inertia for stable servo tuning. Higher ratios reduce reflected inertia but also slow axis velocity. Third, verify that the angular positioning resolution — encoder resolution divided by gear ratio — is finer than your smallest programmed increment. In practice, CNC 4th-axis applications in Colombian precision machining typically use ratios of 5:1 to 20:1 with the EP precision-grade units (backlash ≤ 3 arc-min), giving a good balance of speed and positioning accuracy for aluminum and steel contouring work.

Q7. Can the EP right angle planetary gearbox be used as a direct replacement for a Zollern ZHP3-series slewing gearbox on an existing crane?+

Yes, the EP-ZHP3 replacement range is specifically engineered to maintain dimensional and performance compatibility with the Zollern ZHP3 series. Our engineering team verifies the mounting flange bolt pattern, output spline profile (DIN 5480), overall envelope dimensions, rated torque, and gear ratio against the original Zollern ZHP3 data sheets before confirming the replacement model. In most installations, the swap is a direct bolt-on replacement requiring no modification to the machine structure, motor, or driven pinion. We supply a dimensional comparison sheet with every ZHP3 replacement order so the on-site maintenance team can perform a final check before installation. After replacement, commissioning follows the standard six-step procedure in our technical manual.

Q8. How does a planetary gear reverse direction of rotation and what does this mean when specifying output shaft rotation for my machine?+

In a standard planetary gear set (ring gear fixed, sun gear input, carrier output), the output rotates in the same direction as the input sun gear. However, when the bevel stage is added at the input of a right angle unit, the relationship between motor shaft rotation and output shaft rotation depends on the handedness of the bevel gear pair and the orientation of the input shaft relative to the output shaft. On the EP right angle planetary gearbox, the standard configuration is: clockwise motor rotation viewed from the motor end produces clockwise output shaft rotation viewed from the output end. If your application requires a specific output rotation direction (for example, a slewing drive where the direction determines crane swing direction), specify this at the time of order and our team will confirm the rotation convention or arrange a mirrored bevel configuration if required.

Editor: PXY