Inline Planetary Gearbox › 300 Series Family › EP-306 Frame
ISO 9001:2015 · 100% Load-Tested
EP-306 Series
Inline Planetary Gearbox
Drop-in replacement for Bonfiglioli Trasmital 306L1–306L4 and 306R2–306R4. The EP-306 fits within the complete 300-series planetary range — covering 1,000 to 450,000 Nm across 16 frame sizes — with fully interchangeable mounting dimensions and comparable performance at competitive B2B pricing.
8,500 Nm Rated
75 kW Max Power
Ratios up to 9,000:1
MOQ 1 Unit
01
EP-306 Series Inline Planetary Gearbox Product Overview
The EP-306 is an inline planetary gearbox in the 300-series industrial range, rated at 8,500 Nm continuous output torque at a 10,000-hour service life with 75 kW maximum mechanical power throughput. It covers both coaxial-inline (L series: L1 through L4) and right angle bevel-output (R series: R2 through R4) configurations within the same housing frame — the stage-count suffix determines the achievable gear ratio, from low ratios at L1/R2 up to 2,900:1 inline and 900:1 right angle at the L4/R4 stage count.
The EP-306 sits within a fully interchangeable 300-series ecosystem. All 16 frame sizes — from the 300 frame (1,000 Nm) up to the 321 frame (450,000 Nm) — share the same mounting standards, input interface options, and output configurations. This means an equipment fleet running multiple frame sizes across different machines can be maintained through a single supplier relationship rather than sourcing each frame from a separate vendor.
This unit replaces Bonfiglioli Trasmital 306L1, 306L2, 306L3, 306L4, 306R2, 306R3, and 306R4 with confirmed dimensional interchangeability — mounting bolt pattern, output shaft diameter, housing pilot, and port locations all match the original unit. No shimming, no adaptor fabrication, and no machine modification required for a direct replacement installation.
02
Compatible Bonfiglioli 300-Series Models
The EP-306 is dimensionally interchangeable with the 306 variants highlighted below. The full 300-series range (300 through 321) is also available from our factory — covering the complete Bonfiglioli inline planetary catalogue in one supplier relationship. EP-306 row is highlighted.
| Frame | L1 | L2 | L3 | L4 | R2 | R3 | R4 |
|---|
| 300 | 300L1 | 300L2 | 300L3 | 300L4 | 300R2 | 300R3 | 300R4 |
| 301 | 301L1 | 301L2 | 301L3 | 301L4 | 301R2 | 301R3 | 301R4 |
| 303 | 303L1 | 303L2 | 303L3 | 303L4 | 303R2 | 303R3 | 303R4 |
| 305 | 305L1 | 305L2 | 305L3 | 305L4 | 305R2 | 305R3 | 305R4 |
| 306 ✦ | 306L1 | 306L2 | 306L3 | 306L4 | 306R2 | 306R3 | 306R4 |
| 307 | 307L1 | 307L2 | 307L3 | 307L4 | 307R2 | 307R3 | 307R4 |
| 309 | 309L1 | 309L2 | 309L3 | 309L4 | 309R2 | 309R3 | 309R4 |
| 310 | 310L1 | 310L2 | 310L3 | 310L4 | 310R2 | 310R3 | 310R4 |
| 311 | 311L1 | 311L2 | 311L3 | 311L4 | 311R2 | 311R3 | 311R4 |
| 313 | 313L1 | 313L2 | 313L3 | 313L4 | 313R2 | 313R3 | 313R4 |
| 315 | 315L1 | 315L2 | 315L3 | 315L4 | — | 315R3 | 315R4 |
| 316 | 316L1 | 316L2 | 316L3 | 316L4 | — | 316R3 | 316R4 |
| 317 | 317L1 | 317L2 | 317L3 | 317L4 | — | 317R3 | 317R4 |
| 318 | 318L1 | 318L2 | 318L3 | 318L4 | — | — | 318R4 |
| 319 | 319L1 | 319L2 | 319L3 | 319L4 | — | — | 319R4 |
| 321 | 321L1 | 321L2 | 321L3 | 321L4 | — | — | 321R4 |
✦ Primary product on this page. We do not sell Bonfiglioli products; brand names are referenced for product selection convenience only and do not involve any infringement.
03
EP-306 Series Inline Planetary Gearbox Technical Specifications
| Parameter | Value / Details |
| Torque Range (full 300 series) | 1,000 – 450,000 Nm |
| EP-306 Frame — Rated Torque | 8,500 Nm |
| Max Transmissible Power | Up to 540 kW (full series) · 75 kW at 306 frame |
| Max Input Speed (306) | 2,500 RPM |
| Gear Ratio Range | 3.4 – 9,000 : 1 |
| Gear Unit Version | Inline (coaxial) · L = inline · R = right angle with bevel stage |
| Output Configuration | Foot & flange mount · Solid keyed shaft · Splined · Splined hollow · Hollow with shrink disc |
| Input Configurations | Flanged axial piston hydraulic · Hydraulic orbit motor · IEC motor adaptor · NEMA motor adaptor · Solid input shaft |
| Brake Options | Hydraulic parking brake (spring-applied) · DC electric brake · AC electric brake |
| Certification & Testing | ISO 9001:2015 · CE · RoHS · 100% load test certificate per unit |
| MOQ / Shipping | MOQ 1 unit · Sea / Air / DHL · EXW, FOB, CFR, CIF · Jiangmen, China |
04
EP-306 Series Inline Planetary Gearbox Key Features & Advantages
🔢
16 Frame Sizes — One Supplier Covers the Full Range
The 300-series covers 1,000–450,000 Nm across 16 frames. Sourcing multiple frame sizes from one supplier reduces qualification work, simplifies purchase orders, and gives you a single point of contact for cross-frame applications. All 16 frames share common mounting standards and input interface options.
📐
Ratios 3.4:1 to 9,000:1 — Stage Count Selects the Range
Inline (L1–L4) covers 3.7:1–2,900:1; right angle (R2–R4) covers 9:1–900:1; worm-combined configurations reach 9,000:1 within the same housing. Specify the required output RPM and motor speed — we calculate the correct stage count and confirm the ratio without guesswork.
🔌
5 Input Interfaces — Hydraulic and Electric, No Custom Work
Flanged axial piston hydraulic, hydraulic orbit motor, IEC electric, NEMA electric, and solid input shaft — all standard options. Specifying the motor interface at order time eliminates on-site adaptor fabrication and the associated delay and cost.
🛡️
Fail-Safe Parking Brake Available on All Variants
Spring-applied, hydraulically released parking brake option available across all EP-306 variants. Engages automatically on power loss — mandatory for crane duty, winch load holding, and any suspended-load or grade-holding application. DC and AC electric brake also available.
✅
100% Individual Load Test — Certificate Ships With Every Unit
No-load run-in followed by full rated-torque bench test on every unit — not batch-sampled. Signed test certificate is included in the shipping documentation as standard. Satisfies ISO 9001 procurement audit requirements without additional test request or surcharge.
🔧
Modular — Custom Configs Without Tooling Cost or Extended Lead Time
Non-standard ratios, special shaft dimensions, and OEM-specific input/output combinations are built from the standardised 300-series component set. No new tooling charge, no production run minimum. Lead time for custom configurations: 10–35 days.
05
EP-306 Inline Planetary Gearbox Application Scenarios
🏭
Industry 01
Discrete Manufacturing & Process Industries
The EP-306 inline planetary gearbox is deployed in continuous-duty drives where high torque output in a compact housing is the primary requirement — conveyor drives, mixer drives, agitator drives, and industrial rotary equipment in chemical, food, and manufacturing plants. The series covers fractional power applications all the way to several hundred kW, allowing a single product family to span a plant's full drive requirement list.
Conveyor Drives
Mixer & Agitator
Water Treatment
🤖
Industry 02
Mechatronic & Motion Systems
For industrial automation and process control, the EP-306 can be integrated with servo motors and motion controllers as part of a complete closed-loop drive system. Its precise gear ratios and low backlash in the precision variant support positioning applications in packaging machinery, assembly lines, and automated material handling systems requiring repeatable, accurate motion control across thousands of operating cycles.
Servo Integration
Packaging Lines
Automated Assembly
🏗
Industry 03
Mobility, Construction & Renewable Energy
The 300-series covers travel drives, slewing drives, winch drives, and cutter drives for mobile equipment — including construction machinery, offshore deck equipment, and wind turbine yaw and pitch systems. The EP-306 at 8,500 Nm sits in the compact tracked carrier and small crane drive range; larger 300-series frames (307–321) extend into full-size construction and renewable energy applications. Hydraulic motor input is standard for mobile and offshore equipment.
Travel & Winch Drives
Solar Tracker Slew
Wind Yaw Drive
06
EP-306 Series Inline Planetary Gearbox Frequently Asked Questions
Does the EP-306 directly replace Bonfiglioli 306L1, 306L2, 306L3, 306L4, 306R2, 306R3, and 306R4?
+
Yes — all 7 variants are dimensionally interchangeable. Mounting bolt pattern, output shaft diameter, housing pilot, and port locations match the original Bonfiglioli 306 unit. Send nameplate data for written confirmation within 4 hours before committing to an order.
Can I order other frames from the 300 series (e.g. 307, 311, 315) from the same supplier?
+
Yes — all 16 frames from 300 through 321 (1,000–450,000 Nm) are available. Multi-frame orders covering different machines in the same fleet can be consolidated into a single purchase order, simplifying procurement documentation and logistics.
What is the difference between the 306L and 306R variants?
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306L = inline coaxial — input and output on the same axis. 306R = right angle — bevel stage redirects output 90° to the input. Suffix digit (L1–L4, R2–R4) indicates the number of planetary reduction stages, which determines achievable ratio range within the same housing.
What lead time should I expect for the EP-306 series Inline Planetary Gearbox to Canada, Australia, or Europe?
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In-stock standard units: 4–7 days processing. Custom configs: 10–35 days. Sea freight: 18–35 days. Air freight: 5–8 days. DHL/FedEx: 3–5 days. EXW, FOB, CFR, CIF from Jiangmen. Full export documentation included with every shipment.
Does the EP-306 inline planetary gearbox support hydraulic orbit motor input for mobile equipment?
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Yes — hydraulic orbit motor input is a standard configuration option alongside axial piston hydraulic, IEC/NEMA electric, and solid shaft inputs. Specify the motor SAE flange designation or provide the motor model number and we'll confirm the correct adaptor configuration at time of quotation.
07
Verified Customer Reviews
"
★★★★★
"We run a fleet of compact tracked piling rigs across three sites in Western Australia. Started ordering EP-306L3 units two years ago. Every unit has arrived with the test certificate and dimensional drawings pre-confirmed. Nine units in service, zero installation issues. The fourth order was placed on a Friday afternoon and shipped Monday. That kind of reliability is worth more than the price difference alone."
B. Hartley 🇦🇺 · Plant Manager — Piling & Foundation Contractor, Perth, Australia
✓ Verified Purchase · Repeat Customer
"
★★★★★
"Replaced a Bonfiglioli 306L2 on a conveyor drive at our facility. The procurement team had questions. I said: same mounting dimensions, same performance spec, 35% less cost, arrives in 8 days instead of 9 weeks. They asked if I was sure. I was sure. The gearbox has since run 2,200 hours. Nobody has asked any follow-up questions. In manufacturing, the absence of questions is a standing ovation."
T. Grabowski 🇺🇸 · Maintenance Supervisor — Food Processing Plant, Wisconsin, USA
✓ Verified Purchase
08
Frequently Ordered Together
Two products that complete the EP-306 drive system — on the input end and the output safety end.
⚙️
Input Drive — Power Source
Hydraulic Orbit Motor
The hydraulic orbit motor mounts directly to the EP-306 input flange via an SAE adaptor ring — no intermediate coupling required. Low-speed, high-torque orbit motors (Gerotor design) are widely used with planetary gearboxes in agricultural and compact mobile equipment where a fixed hydraulic system is available. Displacement: 50–800 cc/rev · Max pressure: 250 bar · Flange: SAE A/B.
Why Order Together
Specifying motor and gearbox together confirms SAE flange interface, port positions, and shaft diameter before manufacture. Avoids the most common installation problem: discovering a port clearance conflict after the unit is mounted on the machine.
Enquire About Hydraulic Motor →
🔌
Input Drive — Electric Integration
IEC / NEMA Motor Adaptor & Coupling Kit
For fixed industrial installations where an IEC or NEMA frame electric motor is the drive source, the motor adaptor and elastic coupling kit provides a precision-machined interface between the motor face and the EP-306 input flange. Available for IEC 80 through IEC 315 frame sizes and NEMA 56 through NEMA 405 frames. Supplied as a complete kit: adaptor ring, elastic coupling element, and retaining hardware — ready to assemble without on-site machining.
Why Order Together
An adaptor ordered at the same time as the gearbox is matched and verified against the EP-306 input face dimensions during factory assembly — eliminating the common issue of pilot diameter or bolt-circle mismatch discovered during site installation, which typically results in a 2–3 week delay for a replacement adaptor.
Enquire About Motor Adaptor Kit →
💡
Bundle enquiry: Include your motor make, frame size or SAE flange designation, and required gear ratio when you contact us — we'll quote the EP-306 gearbox and the correct input adaptor or motor as a confirmed assembly, with interface dimensions verified before shipment. Email [email protected].
Order the EP-306 Inline Planetary Gearbox — Confirmed in 24 Hours
Send your Bonfiglioli model code (306L1–L4 or 306R2–R4), gear ratio from the nameplate, and shipping destination. We'll confirm the EP-306 equivalent, send dimensional drawings, and return price and lead time within 24 business hours. MOQ 1 unit — fleet and OEM volume orders welcome.
✓ 306L1 L2 L3 L4 · R2 R3 R4
✓ Full 300–321 Series Available
✓ Dim. Drawing Before Order
✓ 100% Load-Tested · MOQ 1
✓ Sea / Air / DHL · ISO 9001:2015
📧 [email protected]
· Canada Planetary Gear Drive Co., Ltd
· T/T · Western Union · Escrow
· Port: Jiangmen, China
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