301 Series Inline Planetary Gearbox
Trusted Across Industries:
Agricultural Machinery
Packaging & Food Processing
Automation & Robotics
Material Handling
Irrigation & Water Management
Marine Auxiliary
Renewable Energy
Why Choose Our 301 Series Inline Planetary Gearbox? — Our 301 Series is dimensionally verified against Bonfiglioli 301 OEM installation drawings — housing bolt pattern, output shaft geometry, motor flange pilot diameter, and oil plug positions all confirmed before a cross-reference is issued. T2max ~2,430 N·m. Transmissible power up to 540 kW. Ratios 3.4:1 to 9,000:1. All seven standard Bonfiglioli 301 configurations covered: 301L1 through 301L4 (inline) and 301R2 through 301R4 (right-angle). Full output and input modularity. Integrated hydraulic, DC, and AC brake options. Profile-ground gears throughout. 100% factory acceptance test with every unit. Free 48-hour cross-reference — send us the nameplate data.
301 Series Inline Planetary Gearbox — Product Overview
The 301 Series Inline Planetary Gearbox is frame size 01 in the Bonfiglioli 300 Series — the second smallest in the range, positioned between the 300 (T2max ~1,580 N·m) and the 303 (T2max ~3,616 N·m) — with a published T2max of 21,500 in·lbs (~2,430 N·m). This torque class serves the widest variety of light-to-medium duty applications: small-to-medium conveyor drives, auger and feed mixer drives, packaging line drives, pump and fan drives, and automation machinery throughout the manufacturing, food processing, agricultural, and materials handling sectors. The compact housing and fully modular architecture of the Bonfiglioli 301 make it one of the most frequently specified frame sizes in the lower range of the 300 Series family worldwide.
Our 301 Series Inline Planetary Gearbox is a confirmed dimensional replacement for every standard Bonfiglioli 301 configuration: all four inline stage variants (301L1 / 301L2 / 301L3 / 301L4) and all three right-angle variants (301R2 / 301R3 / 301R4). Every critical dimension is verified against Bonfiglioli 301 OEM installation drawings before a cross-reference is confirmed — housing bolt pattern, output shaft diameter and keyway geometry, and motor flange pilot diameter — so your installation team can verify the dimensional fit before taking the original unit out of service. This verification process is what distinguishes our replacement service from generic "compatible" claims.
Our 301 Series cross-reference database also covers equivalent inline planetary models from Brevini (EM series in the ~2,000–3,000 N·m class), Dinamic Oil (RE series), Reggiana Riduttori (RR / RA series), Comer Industries (PG / PGA series), Rossi (R2E series), and Rexroth (GFT series). For any of these brands, submit the nameplate data and we return a confirmed 301 Series cross-reference within 48 hours.
301 Series OEM Cross-Reference — All Model Variants & Equivalent Brands
Our 301 Series Inline Planetary Gearbox provides confirmed dimensional replacement for all OEM models listed below. All housing interfaces, output shaft geometry, torque ratings, and motor flange standards are verified against OEM installation drawings before confirmation.
① Bonfiglioli (Trasmital) — 301 Series: All Standard Model Numbers
The Bonfiglioli 301 is the primary OEM model our 301 Series is engineered to replace. All seven standard ordering configurations are covered — inline (L) and right-angle (R) versions, single through four-stage reductions, and all standard output shaft suffix codes.
| Bonfiglioli Model | Version | Stages | T2max | Our Equivalent |
|---|---|---|---|---|
| 301L1 | Inline, 1-stage | 1 | ~2,430 N·m | 301-L1 |
| 301L2 | Inline, 2-stage | 2 | ~2,430 N·m | 301-L2 |
| 301L3 | Inline, 3-stage | 3 | ~2,430 N·m | 301-L3 |
| 301L4 | Inline, 4-stage | 4 | ~2,430 N·m | 301-L4 |
| 301R2 | Right-angle, 2-stage | 2 (bevel + planetary) | ~2,430 N·m | 301-R2 |
| 301R3 | Right-angle, 3-stage | 3 (bevel + 2 planetary) | ~2,430 N·m | 301-R3 |
| 301R4 | Right-angle, 4-stage | 4 (bevel + 3 planetary) | ~2,430 N·m | 301-R4 |
Standard Output Shaft Suffix Codes — All 301 Variants
| Bonfiglioli Suffix | Output Shaft Type | Mounting | Available in Our 301 Series |
|---|---|---|---|
| NHC / HC | Heavy-duty flanged output — keyed shaft | Flange | ✓ Yes |
| NHZ / HZ | Heavy-duty splined male shaft | Flange | ✓ Yes |
| NPC / PC | Foot base — keyed shaft | Foot | ✓ Yes |
| FZ / FZB | Hollow splined shaft | Flange | ✓ Yes |
| FP | Hollow shaft for shrink disc | Flange | ✓ Yes |
301 Series in Context — Bonfiglioli 300 Series Frame Size Ladder: The 301 is frame size 01 of 20 in the Bonfiglioli 300 Series (300 → 301 → 303). The adjacent sizes — 300 (T2max ~1,580 N·m) and 303 (T2max ~3,616 N·m) — are available from our range as the 300 Series and 303 Series respectively. The 301 is the second smallest frame size in the 300 family and covers the most compact light-duty inline planetary applications. Always confirm the exact frame size number from the gearbox nameplate before ordering; the 300, 301, and 303 housings are dimensionally distinct.
② Brevini Riduttori (Dana) — Equivalent Models (~2,000–3,500 N·m Class)
The Brevini EM series inline planetary gearboxes in the 2,000–3,500 N·m torque band are confirmed cross-references for the 301 Series:
| Brevini Model | Series | Rated Torque | Stages | Typical Application |
|---|---|---|---|---|
| EM1010 | EM Series | ~1,000 N·m | 1 stage | Light conveyor, packaging |
| EM1020 | EM Series | ~2,000 N·m | 1 stage | Conveyor, agitator |
| EM1045 | EM Series | ~3,000 N·m | 1 stage | Agricultural auger, mixer |
| ED2010 | ED Series | ~1,000 N·m | 2 stage | Light industrial conveyor |
| ED2020 | ED Series | ~2,000 N·m | 2 stage | Hoist, small pump drive |
| ET3010 / ET3020 | ET Series | ~1,000 – 2,000 N·m | 3 stage | High-ratio light conveyor, auger |
③ Dinamic Oil — RE Series (~1,000–2,500 N·m Class)
Dinamic Oil RE series inline planetary gearboxes in the 1,000–2,500 N·m torque band are cross-referenced to the 301 Series:
| Dinamic Oil Model | Rated Torque (N·m) | Typical Application |
|---|---|---|
| RE110 | ~1,100 | Light industrial conveyor, packaging |
| RE210 | ~2,100 | Conveyor drive, agitator |
| RE240 | ~2,400 | Agricultural, light hoist |
④ Additional OEM Cross-References — Same Torque Class
Beyond the primary brand families above, the 301 Series covers the following OEM inline planetary models in the ~1,000–3,500 N·m range. Submit the model number and we confirm within 48 hours:
| OEM Brand | Series / Models | Torque Class | Typical Application |
|---|---|---|---|
| Reggiana Riduttori | RR / RA (1K–3K class) | 1,000 – 3,500 N·m | Light industrial, conveyor |
| Comer Industries | PG / PGA Series (1K–3K class) | 500 – 3,000 N·m | Agricultural machinery, auger |
| Bosch Rexroth | GFT4 / GFT7 Inline | 1,000 – 3,500 N·m | Hydraulic motor, light industrial |
| Rossi | R2E Series (1K–3K class) | 1,000 – 3,000 N·m | Italian industrial, packaging |
| Omni Gear / Auburn Gear | RC / MH Series (1K–3K class) | 500 – 3,000 N·m | Agricultural and light industrial |
Free 48-Hour OEM Cross-Reference Service: Send us the OEM brand, model number (e.g., Bonfiglioli 301L2 HC, Brevini EM1045, or Dinamic Oil RE210), gear ratio, and motor flange type from the gearbox nameplate. Our engineering team confirms the 301 Series equivalent with a dimensional drawing and delivery timeline within 48 hours — at no charge.
301 Series Inline Planetary Gearbox — Technical Specifications
Standard engineering parameters for the 301 Series, aligned with the Bonfiglioli 301 and equivalent OEM specifications. All parameters match or exceed the original OEM ratings.
| Parameter | Specification | Notes |
|---|---|---|
| T2max (Peak Torque) | ~2,430 N·m (21,500 in·lbs) | Matches Bonfiglioli 301 T2max specification |
| Transmissible Power | Up to 540 kW | Matches Bonfiglioli 300 Series power ceiling |
| Gear Ratio Range | 3.4:1 – 9,000:1 | 1 to 4 inline stages; right-angle 2–4 stages |
| Gear Unit Versions | Inline (L) / Right-angle (R) with spiral bevel first stage | Matching Bonfiglioli 301L and 301R configurations |
| Output Configurations | Flanged keyed shaft / Splined shaft / Foot keyed / Hollow splined / Hollow with shrink disc | All Bonfiglioli 301 suffix codes reproduced |
| Input Configurations | Flanged axial-piston motor / Orbit motor / IEC B5 / NEMA / Solid input shaft | Custom adaptor plates for non-standard motors |
| Brake Options | Hydraulic-released parking brake / DC electric brake / AC electric brake | Rated to hold full nominal output torque at any ratio |
| Transmission Efficiency | 96% – 98% per stage | Rolling-contact planetary; consistent with OEM spec |
| Gear Material | 20CrMnTi / 18CrNiMo7-6 Alloy Steel | Carburised, 58–62 HRC; profile-ground DIN/ISO Class 6 |
| Housing Material | Ductile Iron GGG-50 | Machined to Bonfiglioli 301 reference dimensions |
| Sealing / IP Rating | IP65 standard / IP67 optional | Double-lip shaft seals; cassette seals for washdown duty |
| Lubrication | Mineral or Synthetic ISO VG 220/320 gear oil | Vent, level, and drain plug positions match OEM |
| Operating Temperature | -30°C to +100°C | Extended range options available |
| Surface Treatment | Epoxy primer + two-component PU topcoat | Salt spray >500 hours per ISO 9227 |
| Design Life (B10) | 3,000+ hours at rated load | Per ISO 281 bearing life and AGMA 2001 gear durability |
| Certification | ISO 9001:2015, CE Declaration of Conformity | FAT report supplied with every unit |
| Lead Time | 5 – 15 days (standard) / 25 – 50 days (custom ratio) | 301L2 / 301L3 / 301L4 common ratios stocked in partial-build |
Core Advantages
Eight engineering and commercial reasons to specify our 301 Series as the Bonfiglioli 301 replacement:
● Verified Dimensional Match
Every 301 Series cross-reference is verified against Bonfiglioli 301 OEM installation drawings — housing bolt pattern, output shaft diameter and keyway, and motor flange pilot diameter — before confirmation. No assumptions from torque data alone.
● All 7 Standard Variants Covered
301L1, 301L2, 301L3, 301L4 (inline, 1 to 4 stages) and 301R2, 301R3, 301R4 (right-angle with bevel input) — all standard reduction stage counts and all output shaft suffix types are available from our confirmed production range.
● T2max ~2,430 N·m — Matched to OEM
The 301 Series is rated to the Bonfiglioli 301 T2max of ~2,430 N·m (21,500 in·lbs) — ensuring the replacement unit meets the same peak torque capability without upsizing to the 303 frame or downsizing to the 300 frame.
● Profile-Ground Gear Sets
All sun gears, planet gears, and ring gears are carburised, hardened to 58–62 HRC, and profile-ground to DIN/ISO Class 6 — matching the Bonfiglioli 300 Series production quality standard throughout and not substituted with lower-accuracy hobbed gears to reduce cost.
● 96–98% Per-Stage Efficiency
Rolling-contact planetary gearing delivers 96–98% efficiency per reduction stage — consistent with the original Bonfiglioli 301 specification and significantly better than worm-gear alternatives in the same torque class, reducing operating energy costs in continuous-duty applications.
● Full Brake Integration
Hydraulically-released parking brake, DC electric brake, and AC electric brake are available as factory-integrated options — matching every Bonfiglioli 301 brake configuration and meeting the load-holding requirements for hoist and inclined conveyor applications.
● Fast Lead Times from Stock
301L2, 301L3, and 301L4 in the most common gear ratios (10:1 to 500:1) are held in partial-build stock — machined housing and completed gear sets — allowing final assembly and FAT completion within 5–15 days, faster than OEM Bonfiglioli lead times for replacement units.
● 100% Factory Acceptance Test
Every unit is run at rated torque and speed for a minimum of two hours on our loaded test benches. Oil temperature, housing temperature, vibration, and seal integrity are all measured and reported. A complete test report is supplied with every shipment.
How the 301 Series Inline Planetary Gearbox Works
The 301 Series uses the same coaxial multi-stage planetary gear architecture as the Bonfiglioli 301 it replaces. Five steps describe the complete power flow:
Motor Input
The electric or hydraulic motor drives the first-stage sun gear at rated input speed. The input flange matches the motor standard exactly — IEC B5, SAE, or NEMA — eliminating adaptor plates in direct replacement installations where the original motor is retained.
Planet Gear Load Sharing
Three or more planet gears mesh simultaneously with the sun gear and the fixed ring gear. Each planet carries a proportional share of total torque — enabling the compact 301 housing to transmit up to ~2,430 N·m peak torque reliably across the full gear ratio range.
First-Stage Reduction
The planet carrier outputs at reduced speed and amplified torque, fully coaxial with the motor input. Speed drops and torque increases in direct proportion to the first-stage ratio — the defining feature of an inline planetary gearbox that enables its compact dimensions.
Additional Stages
For high ratios — 100:1 to 9,000:1 as required in agricultural drives, slow conveyor drives, and irrigation machine drives — the 301 Series adds up to three additional reduction stages, each multiplying output torque while adding only modest axial length to the housing.
Coaxial Output
The final-stage carrier drives the output shaft or flange through exactly the same interface geometry as the Bonfiglioli 301 it replaces — keyed shaft, splined shaft, hollow splined shaft, or hollow shaft with shrink disc — enabling a direct bolt-in installation with no modification to the driven equipment.
301 Series Application Scenarios
The Bonfiglioli 301 is widely specified in compact light-to-medium duty applications where high gear ratio, small footprint, and long service life must be achieved in the same unit. Our 301 Series covers the same application sectors with confirmed dimensional and performance equivalence:
Light Industrial Conveyor & Material Handling
Small-to-medium belt conveyors, roller conveyors, sortation systems, and pallet conveyor drives in warehousing, distribution, and light manufacturing. The 301L2 and 301L3 are the standard drive specifications for conveyor drives in the 1.5–11 kW motor power range, where the Bonfiglioli 301 is the most common existing specification.
Agricultural Machinery
Small feed mixer drives, precision seed dispenser drives, irrigation reel drives, and sprayer pump drives. The 301 Series' wide ratio range (3.4:1 to 9,000:1), compact housing, and electric or hydraulic motor input compatibility make it the correct replacement for Bonfiglioli 301 units in compact agricultural equipment where space is constrained and long continuous duty is required.
Packaging & Food Processing
Packaging line conveyor drives, filling machine drive units, labelling and wrapping machine drives, and food processing conveyor drives. The 301 Series IP65 and IP67 sealing options make it suitable for regular washdown food processing environments, and the hollow shaft with shrink disc output enables direct shaft mounting without coupling alignment.
Automation & Robotics Ancillary Drives
Automated guided vehicle (AGV) ancillary drives, robotic arm positioning drives, and precision indexing table drives in automated manufacturing. The 301 Series' wide ratio range and IEC B5 electric motor input compatibility make it suitable for servo-motor driven positioning applications where the Bonfiglioli 301 is the existing specification.
Irrigation & Water Management
Centre-pivot and hose reel irrigator drive units, small pump station drives, and water treatment plant mixing drives. The 301 Series IP65/IP67 sealing, wide ratio range, and electric or hydraulic motor input compatibility make it the standard replacement for compact Bonfiglioli 301 units in irrigation machine wheel and reel drive positions.
Renewable Energy & Environmental
Small wind turbine pitch drives, solar tracker azimuth drives, biogas plant small agitator drives, and composting machine drives. The 301 Series' high efficiency (96–98% per stage), wide ratio range, and compact modular housing suit the continuous low-speed high-ratio duty of small renewable energy and environmental equipment.
301 Series — Frequently Asked Questions
Common questions from maintenance engineers and procurement teams sourcing Bonfiglioli 301 Series replacements:
Q 01
Is the 301 Series a confirmed bolt-on replacement for the Bonfiglioli 301L2 and 301L3?
Yes. Our 301 Series models are dimensionally verified against Bonfiglioli 301 OEM installation drawings — covering all configurations from 301L1 through 301L4 and 301R2 through 301R4. Housing bolt pattern, output shaft diameter and keyway dimensions, and motor flange pilot diameter are all confirmed before a cross-reference is issued. Provide the complete Bonfiglioli model number including the reduction stage suffix (L1 through L4) and output shaft suffix (e.g., HC, FP, NPC, FZ) and we return a confirmed dimensional match within 48 hours.
Q 02
What is the T2max of the Bonfiglioli 301 and how does the 301 Series replacement compare?
The Bonfiglioli 301 has a published T2max of 21,500 in·lbs, which converts to approximately 2,430 N·m. Our 301 Series replacement is designed and rated to the same T2max — ensuring the replacement unit can withstand the same maximum peak torque as the original. This is the critical parameter for hoist and inclined conveyor applications where momentary peak torques must not exceed the gearbox's structural rating.
Q 03
How does the 301 Series relate to the Bonfiglioli 300 and 303 in the frame size ladder?
In the Bonfiglioli 300 Series, the 301 sits between the 300 (T2max ~1,580 N·m) and the 303 (T2max ~3,616 N·m). The three frame sizes are dimensionally distinct and cannot be interchanged. The 301 is the second smallest frame size in the 300 Series family. Always confirm the exact frame size from the nameplate before ordering; we confirm the correct series from nameplate data within 48 hours.
Q 04
Can the 301 Series also replace Brevini EM1020 and EM1045?
Yes, with confirmed dimensional cross-reference. The Brevini EM1020 and EM1045 inline planetary models are in the same torque class as the Bonfiglioli 301 (~2,000–3,000 N·m continuous rated torque), and our 301 Series cross-reference database covers these models. Provide the Brevini model number including the ratio code and we return a dimensional comparison confirming whether the housing interfaces are directly interchangeable.
Q 05
What motor interface options are available for the 301 Series?
The 301 Series supports a full range of motor input configurations as standard factory options: IEC B5 flanges (63 through 315 frame) for electric motors, SAE A / B / C hydraulic motor flanges for orbit and axial-piston hydraulic motors, NEMA C-face flanges for North American applications, and solid input shaft configurations for belt or chain input. Custom adaptor plates are also available for non-standard motor frames. Specify the motor make, frame size, and shaft configuration when placing the order and we confirm the correct input interface.
Q 06
Can you supply a custom gear ratio not in the standard Bonfiglioli 301 ratio tables?
Yes. The 301 Series modular gear set architecture allows non-standard ratios by selecting alternative sun, planet, and ring gear tooth counts from the modular gear library without requiring entirely new tooling. Submit your required input speed, output speed, and output torque and our engineers calculate the achievable ratio options within the 301 Series housing. Lead time for custom ratio configurations is typically 25–50 days.
Q 07
What quality documentation is supplied with each 301 Series unit?
Every unit is supplied with: (1) full factory acceptance test report — minimum 2-hour loaded run at rated torque and speed, recording oil temperature, housing surface temperature, vibration, noise, and seal integrity; (2) EN 10204 3.1 material test certificates for all alloy steel forgings; (3) heat treatment batch records; (4) gear tooth profile and lead measurement records; (5) CE Declaration of Conformity; (6) installation and maintenance manual in English. All documentation is included in the standard delivery package at no additional charge.
Quality Assurance
- ✓ ISO 9001:2015 Certified Production — all manufacturing processes from raw material incoming inspection to final assembly and test are controlled under our certified QMS.
- ✓ 100% Loaded Factory Acceptance Test — every unit run at rated torque and speed for minimum 2 hours; oil temperature, vibration, noise, and seal integrity recorded; full test report supplied with every unit.
- ✓ Profile-Ground Gear Inspection — all gears measured on CNC gear measuring machines; gear tooth profile and lead records supplied with every unit.
- ✓ EN 10204 3.1 Material Certificates — alloy steel forgings with mill certificates; heat treatment batch records maintained for 10 years.
- ✓ Verified Dimensional Cross-Reference — all OEM replacement cross-references verified against Bonfiglioli 301 installation drawings before confirmation to the customer.
- ✓ CE Declaration of Conformity — supplied with all units; BV, ABS, and Lloyd's certification available for marine and offshore projects on request.
How to Order a 301 Series Replacement
Read the Nameplate
Record OEM brand, frame size, full model number (e.g., 301L3 HC or 301R2 FP), gear ratio, and motor flange code from the gearbox nameplate or maintenance manual.
Submit Cross-Reference
Send nameplate data to our engineering team. We verify dimensional match against Bonfiglioli 301 OEM drawings and confirm the 301 Series equivalent within 48 hours.
Confirm Options
Specify brake type (hydraulic / DC / AC / none), output shaft type, input flange standard (IEC / SAE / NEMA), and IP rating (IP65 or IP67).
Receive Quotation
Firm quotation with lead time, dimensional drawing for installation verification, and CE documentation reference supplied within 48 hours of confirmed cross-reference.
Tested & Shipped
Every unit fully assembled and FAT-tested at rated torque before shipment. Test report, material certificates, and CE documentation included in the delivery package.
Related Products — Compatible Drive Components
Compatible Motors for the 301 Series
The 301 Series is engineered for direct motor attachment across all standard IEC, SAE, and NEMA input flanges — no coupling adaptor required for the most common motor configurations. Our matched motor range covers the complete input torque and speed envelope of the 301 Series, from compact IEC electric motors for conveyor and automation drives to hydraulic orbit and axial-piston motors for mobile machinery, all factory-paired and leak-tested as a complete drive unit before shipment.
Frame 63 to 315, IE3 / IE4 efficiency class, 0.18 kW to 160 kW — direct IEC B5 flange mount to all 301 Series inline inputs. Optional integrated DC or AC electromagnetic brake replaces the need for a separate gearbox brake on lower-torque conveyor and automation configurations.
SAE A / B flange — high torque at low speed, compact and cost-effective for agricultural machinery, irrigation drives, and light industrial applications. Direct mount to the 301 Series SAE input flange with no adaptor plate required for standard SAE A and B orbit motor configurations.
SAE B / C / D flange — displacement 18 to 250 cc/rev, max pressure 350–420 bar. For higher-power hydraulic drive applications requiring the 301 Series' compact inline torque envelope: mobile equipment auxiliary drives, irrigation pump stations, and marine auxiliary drives.
Ready to Replace Your Bonfiglioli 301 or Equivalent Gearbox?
Whether you need a confirmed replacement for a Bonfiglioli 301L1, 301L2, 301L3, 301L4, 301R2, 301R3, or 301R4 — or an equivalent for a Brevini EM / ED, Dinamic Oil RE, Reggiana Riduttori RR, Comer PG / PGA, or other brand model in the same ~2,430 N·m torque class — our engineering team will confirm the 301 Series model, issue a dimensional drawing, and provide a firm quotation within 48 hours.
