Right Angle Planetary Gearbox — NB300R Series Replacement, Up to 450,000 Nm
Right angle planetary gearbox NB300R replacement with torque up to 450,000 Nm. Ratios 6.9–9,000. Fits hydraulic & IEC motors. MOQ 1, 24h quote.
Planetary Gearboxes › Right Angle Series › NB300R Replacement
Right Angle Planetary Gearbox — NB300R Series Replacement, Up to 450,000 Nm
✓ Ratios 6.9–9,000
✓ 100% Load-Tested
✓ MOQ 1 Unit
✓ ISO 9001:2015
What Is a Right Angle Planetary Gearbox — and What Does It Do?
A right angle planetary gearbox combines a multi-stage planetary gear train with a spiral bevel gear set at the output stage, delivering torque at exactly 90° to the input shaft. This is the defining characteristic of the NB300R series — where the application requires high torque in a compact envelope, but an inline (coaxial) shaft arrangement is geometrically impossible.
This unit is a direct-fit replacement for the NBPG NB300R series right angle gear drive. It is designed for both fixed industrial equipment and heavy self-propelled machines operating under continuous high-torque loads. The spiral bevel input stage minimises noise and distributes load evenly across the tooth contact area — producing smoother, quieter running than straight-cut bevel alternatives at equivalent torque ratings.
Where traditional parallel-shaft gearboxes fall short on space or shaft-angle flexibility, this right angle planetary gearbox provides a configurable, direct-mount solution with torque output up to 450,000 Nm and transmissible mechanical power up to 150 kW — in a housing smaller and lighter than conventional alternatives at the same rating.
Right Angle Planetary Gearbox
Product Specifications
Dimensional drawings available on request before order. Cross-reference your existing NB300R unit's nameplate data before specifying.
| Parameter | Value / Details |
|---|---|
| Output Torque Range | 1,000 – 450,000 Nm |
| Max Transmissible Power | Up to 150 kW |
| Gear Ratio Range | 6.9 : 1 – 9,000 : 1 |
| Gear Unit Version | Right angle — spiral bevel gear output stage |
| Output Shaft Angle | 90° to input shaft |
| Input Configurations | Flanged axial piston hydraulic motors · Hydraulic orbit motors · IEC motor adaptors · NEMA motor adaptors · Solid input shaft |
| Series Reference | NBPG NB300R Series replacement (direct-fit equivalent) |
| Application Type | Fixed industrial equipment + heavy self-propelled machines |
| Design Feature | Modular — combines planetary stages with bevel output for configurable sizing |
| Condition | New |
| Quality Test | 100% no-load run-in + full-load bench test — signed report supplied |
| Warranty | 12 months from shipment date |
| MOQ | 1 unit — no minimum order quantity |
| Shipping | Sea / Air / DHL · EXW, FOB, CFR, CIF · Jiangmen Port, China |
6 Reasons Engineers Specify This Right Angle Planetary Gearbox
All claims are backed by specification data — no filler language.
A single series spans 1,000 to 450,000 Nm output torque. One supplier, one specification language, one quality standard — regardless of whether you're driving a greenhouse actuator or a heavy construction winch.
Gear ratios from 6.9:1 to 9,000:1 cover everything from moderate speed reduction to very slow rotary positioning applications — without stacking multiple separate gearbox units.
The spiral bevel gear set at the 90° output stage produces progressive tooth engagement rather than sudden contact — reducing noise and vibration versus straight-cut bevel designs at the same torque level.
Accepts flanged axial piston hydraulic motors, hydraulic orbit motors, IEC-frame electric motors (via adaptor), NEMA-frame motors, and solid input shaft drives — minimising redesign work when integrating into existing equipment.
The modular planetary + bevel architecture delivers a smaller, lighter housing than conventional parallel-shaft gear drives at equivalent ratings. This reduces structural load on the mounting and simplifies integration into space-constrained machine designs.
Every unit runs a mandatory no-load run-in followed by a full rated-torque bench test. Signed test report shipped with every unit. No test passed = no dispatch.
Compatible Machine Models — 130+ Excavators and Mobile Equipment
As a right angle gear drive replacement, this gearbox is used across a wide range of heavy equipment platforms. The table below shows the full compatible excavator model range by weight class. For non-excavator industrial applications, contact us with your existing NB300R nameplate data for a direct specification match.
20 10–20t
35 20–30t
21 30–40t
7 40–50t
2 50t+
| Below 10t | 10t Up | 20t Up | 30t Up | 40t Up | 50t Up |
|---|---|---|---|---|---|
| E307B | E315 | DH220-5 | E330 | DH420-7 | DH500-7 |
| E70B-7 | EX120-5 | DH225-7 | E330C | CE420-6 | EC700 |
| EX60-2 | ZX120 | DH225-9 | E330D | EC460 | — |
| EX60-5 | E200B | DH370-7 | E336D | EC460B | — |
| ZX60 | SK135 | E320C | PC300-7 | PC400-6 | — |
| ZX70 | PC120-6 | E320D | PC360-7 | PC400-7 | — |
| ZX75 | PC160-7 | E318C | PC300-8 | PC450-7 | — |
| ZX80 / ZX85 | TB135 / R130 | EC210 / EC240 | PC300-8MO | — | — |
| PC40-7 / PC56 | DH150-7 / DH258 | EC240B / EC290 | SK330-8 / SK350-8 | — | — |
| PC60-6 / PC60-7 | HD400-5-7 / SH120 | EC290BLC / HD700-7 | EC350 / EC360B | — | — |
| SK55 / SK60-5/6/8 | SH280 / CX130 | JS200 / PC200-6 | EC380 / R300 | — | — |
| SK70 / SK75UR | XE150 / FR150/170 | PC200-7 / PC200-8 | R375-7 / DH300-7 | — | — |
| EC55 / SOLAR 55-V / DH55–DH80 / SWE35–SWE70 / YC35 / YC60-7 / YC65-2 / YC85 | SY135 / LG915 | PC220-7 / R210-7 / CX210 / SH200 / SK200-5-6/8 / S265FA / LG200 / LG210 / LG225 / LG230 / LG240 / LG925 / XE240 | DX380 / HD1250 / SH350-5 / CASE360 / LG936 | — | — |
Not sure if your model is covered? Send the nameplate data or machine serial prefix — we'll confirm fit within 4 business hours at no charge.
Application Scenarios
The right angle planetary gearbox NB300R series fits where torque demand is high, envelope is tight, and the output shaft must be perpendicular to the drive motor.
Wheel drives, winch drums, and slewing drives on cranes, concrete pumps, and tracked pavers. The 90° output allows the motor to be positioned clear of structural members while driving the working component.
PTO-driven implements, feed auger drives, and harvesting head drives where a right angle output is required to transmit power from a tractor hydraulic motor to a horizontal working shaft.
Conveyor corner drives, mixer head drives, and rotary table drives in manufacturing and processing plants. The compact planetary-bevel architecture reduces floor space and simplifies machine design.
Chain conveyor drives, crusher feed screws, and drill rig rotation drives. High torque output up to 450,000 Nm handles the extreme load demands of continuous mining operations.
Frequently Asked Questions
Customer Reviews
"We replaced a failed NB300R unit on our concrete mixer drive. The new gearbox bolted straight on — same flange pattern, same shaft diameter, no adaptor work. We confirmed the ratio before ordering and it matched exactly. Machine back running in under 5 hours from arrival. Test report was already in the box. No chasing documents."
"I'll be honest — when the quote came back 45% cheaper than the OEM list price, I assumed something was 'right angle' about the quality too. It was not. The gearbox arrived with an actual load test report, fit perfectly on our crawler conveyor drive, and has now run 1,400 hours without a single issue. I now order three at a time to keep as stock."
Get a Quote for the NB300R Right Angle Planetary Gearbox — 24h Response
Send your existing NB300R nameplate data (frame size, ratio, input type) or your specification requirements (output torque, ratio, motor interface). We'll return a confirmed price, lead time, and shipping options within 24 business hours. MOQ 1 unit. Ships to Canada, Australia, USA, Europe and 50+ countries.
✓ 5 Input Configurations Available
✓ Sea / Air / DHL · EXW FOB CIF
✓ 12-Month Warranty · ISO 9001:2015
📧 [email protected] | Port: Jiangmen, China | T/T · Western Union · Escrow
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