描述
EP-75 Rotary Tiller Cultivator Gearbox — 75–125 HP Heavy-Duty Drive for Farm Tillers
The EP-75 Rotary Tiller Cultivator Gearbox is a purpose-built power-transmission unit engineered for high-demand soil cultivation tasks. Rated at a 540 RPM PTO input and available in four gear ratios — 1:3, 1:2.83, 1:1.65, and 1:1.6 — it covers tractors from 75 HP up to 125 HP, making it one of the most versatile agricultural cultivator gearboxes on the market. Weighing just 37 kg (net), it delivers a balance of structural rigidity and practical field weight that OEM integrators and replacement buyers rely on.
Whether you are retrofitting an aging rotary tiller, sourcing components for a new implement build, or managing a dealer inventory, this Rotavator Gearbox is produced under ISO 9001 quality management and inspected by German CMM metrology equipment — so dimensional accuracy and gear mesh quality are validated, not assumed.
EP-75 Rotary Tiller Gearbox Specifications
The table below lists the verified factory parameters for the EP-75 agricultural cultivator gearbox. All four ratio configurations share the same housing and input connection (3/8 Z6 optical shaft), simplifying installation across different tractor-implement combinations.
| 范围 | EP-75 (HC-75) |
|---|---|
| Gear Ratios | 1:3 / 1:2.83 / 1:1.65 / 1:1.6 |
| Tooth Configuration | 12/36 · 34/12 · 33/20 · 24/15 |
| Module | 6.0 / 5.35 / 5.5 / 7.5 |
| Rated Power | 75 HP / 75 HP / 100 HP / 125 HP |
| Rated Input Speed | 540 RPM |
| Input/Output Interface | 3/8 Z6 Optical Shaft |
| Net Weight | 37 kg |
| Quality Standard | ISO 9001 / CQC Certified |
Rotary Tiller Gearbox Diagram
The diagram below illustrates the internal gear layout, input/output shaft positions, and mounting interface of the EP-75 Rotary Tiller Cultivator Gearbox.
[ Insert Rotary Tiller Gearbox Diagram Here ]
Features of the Rotary Tiller Cultivator Gearbox
- Four Selectable Gear Ratios (1:1.6 – 1:3): A single housing accommodates four distinct output ratios, letting OEM integrators and replacement buyers match blade tip speed precisely to soil type — from loose sandy loam requiring lower torque multiplication to heavy clay benefiting from a 1:3 step-up. This eliminates the need to stock multiple housing variants as a replacement rotary tiller cultivator gearbox.
- CNC-Precision Gear Cutting + Heat Treatment: Gear blanks are precision-forged, then cut on CNC machines and heat-treated using German IPSEN furnace technology combined with laser surface hardening. The result is a consistent case depth and a tooth surface hardness that resists micropitting at sustained 540 RPM operation under full rated load.
- German CMM Dimensional Verification: Every production batch is measured on Coordinate Measuring Machines calibrated to German metrology standards. Shaft concentricity, gear runout, and housing bore alignment are each held within ±0.01 mm tolerance — critical for vibration-free field operation and extended bearing life.
- Compact 37 kg Net Weight: At 37 kg, the EP-75 is light enough for two-person field installation without lifting equipment, while the cast-iron housing provides the wall thickness and rigidity required at 125 HP continuous input.
- Universal 3/8 Z6 Optical Shaft Interface: The standardized input/output shaft profile is compatible with the majority of global PTO shaft suppliers and tractor brands, reducing lead time for OEM agricultural cultivator gearbox procurement.
- ISO 9001 + CQC Second-Degree Safety Certification: The manufacturing facility holds ISO 9001 certification verified by CQC (China Quality Certification Centre) and has passed second-degree safety quality standardization — a benchmark for machinery manufacturing enterprises that export to regulated agricultural markets.
Advantages of Heavy-Duty Agricultural Gearboxes in This Class
Lower Total Cost Per Season
Precision heat-treated gears operate 30–40% longer between service intervals compared to soft-cut alternatives. For a 500-acre operation running 400+ hours per year, that translates directly into fewer replacement events and reduced downtime.
OEM-Ready Custom Engineering
In-house R&D capability allows production of new gearbox variants from customer-supplied drawings within agreed lead times. This makes the EP-75 line attractive for implement manufacturers needing an OEM agricultural cultivator gearbox supplier for farm implements that can scale from prototype to serial production.
Cross-Industry Applicability
The same gear-cutting and heat treatment process applies across the full agricultural and industrial gearbox catalogue. Buyers sourcing both agricultural and industrial drive components can qualify a single supplier, simplifying procurement audits.
Reliable Export Documentation
ISO 9001 and CQC certification simplifies customs clearance and regulatory compliance in the EU, North America, and Southeast Asia — markets where machinery import documentation is scrutinised at the border.
Applications of Agricultural Rotary Tiller Gearboxes
The EP-75 Rotavator Gearbox is deployed across a range of tillage and soil management scenarios. Its four-ratio versatility means one SKU can serve multiple implement configurations:
- Primary Tillage (Paddy & Upland Fields): Used in 75–125 HP tractor-mounted rotary tillers to break compacted soil layers to depths of 150–200 mm before rice or wheat planting.
- Secondary Tillage & Bed Preparation: Drives the tilling shaft on vegetable-bed machines and orchard cultivators where blade speed adjustments via ratio selection optimise seedbed fineness.
- Stubble Incorporation: High-torque 1:3 ratio configuration handles post-harvest residue mixing without shock-load failures — a common failure mode with under-spec Rotavator Gearboxes on heavy residue fields.
- Greenhouse & Strip-Till Implements: The compact housing and standardised shaft profile allow integration into narrow-track indoor cultivation machines and precision strip-till equipment used in conservation farming.
- OEM Implement Manufacturing: Supplied to tiller manufacturers in Asia, Europe, and Latin America as a standard powertrain component for new-build 3-point-hitch rotary tillers, vibratory subsoilers, and power harrows.
- Aftermarket Replacement: Widely used as a replacement rotary tiller cultivator gearbox for worn-out units across popular tractor brands including Kubota, Mahindra, John Deere, and New Holland implement-compatible tillers.
How to Choose a Rotary Tiller Gearbox for Tractors
Selecting the correct Rotary Tiller Cultivator Gearbox involves four primary variables. Matching all four avoids premature failure, cavitation noise, and warranty disputes:
- Tractor PTO Power (HP): The EP-75 covers 75–125 HP depending on ratio selection. Do not run a 75 HP-rated ratio configuration on a 100 HP tractor at full throttle — gear bending fatigue accumulates faster than the design life predicts. Choose the ratio whose HP rating matches or exceeds your tractor’s PTO output.
- Required Blade Output Speed: Rotary tiller blades typically require 200–300 RPM. With a 540 RPM PTO input, the 1:2.83 ratio delivers approx. 191 RPM and the 1:1.65 ratio delivers approx. 327 RPM. Match to your implement’s blade tip speed requirement for the target soil type.
- Input Shaft Interface: Verify your PTO shaft and tiller flange are compatible with the 3/8 Z6 optical shaft standard before ordering. Most global PTO shafts comply, but some older European tractor brands use 1-3/8 Z6 or 1-3/8 Z21 profiles — confirm with a shaft caliper check.
- Soil Condition & Working Width: Heavier clay soils and wider working widths (≥2 m) generate higher peak torque loads. In those conditions, opt for the 1:3 gear ratio at module 6.0, which distributes load across the larger tooth face area and reduces the risk of shock-load fracture.
- OEM vs. Replacement Context: For new implement builds, specify the full ratio and module details to your OEM agricultural cultivator gearbox supplier. For field replacements, cross-reference by housing bolt pattern, shaft diameter, and ratio label stamped on the existing unit.
Frequently Asked Questions — Rotary Tiller Cultivator Gearbox
Q1: What is the rated input speed of the EP-75 gearbox?
The EP-75 is rated at 540 RPM PTO input — the standard speed for most 4WD and 2WD tractors above 50 HP. Do not run at sustained speeds above 540 RPM; over-speeding accelerates bearing wear and can cause oil seal failure within a single season.
Q2: Can this gearbox be used as a direct replacement for other brands?
Yes. The 3/8 Z6 shaft interface and standard bolt-pattern housing are compatible with most rotary tiller frames. Confirm housing dimensions and bolt hole spacing against your existing unit before ordering. Custom flanges are available on request for non-standard housings.
Q3: How often should the gear oil be changed?
Initial fill: change after the first 50 operating hours to flush break-in metal particles. Thereafter, replace gear oil every 200–250 hours or once per season, whichever comes first. Use GL-4 or GL-5 gear oil of the viscosity grade specified in your tractor-implement manual.
Q4: Do you offer OEM supply with custom labelling?
Yes. As an experienced OEM agricultural cultivator gearbox supplier for farm implements, we accept custom nameplates, housing colours, and bespoke gear ratios based on customer drawings. MOQ and lead time depend on configuration; contact our technical team for a project quotation.
Q5: What quality certifications does the EP-75 carry?
The manufacturing facility holds ISO 9001 certification (third-party verified by CQC) and has passed China’s second-degree safety quality standardisation for machinery manufacturing enterprises. All gearboxes are dimensionally verified on German CMM equipment before shipment.
Complete Agricultural Power Drive Package
A Rotary Tiller Cultivator Gearbox performs best when the full driveline is matched. The components below are available as a coordinated package, ensuring shaft sizes, torque ratings, and connection profiles are compatible throughout the drivetrain:
动力输出轴
Telescoping cross-joint shafts, 1-3/8″ Z6 and Z21 profiles, with slip-guard protection tubes. Rated to 540/1000 RPM.
Shear Bolt Yokes
Overload-protection yokes with calibrated shear bolts. Protects the gearbox from impact loads during stone strikes or sudden blade lock-up.
Chain Drives
Roller chain assemblies (ANSI 40/50/60) for secondary speed reduction between gearbox output and blade shaft on wide-deck tillers.
Slip Clutches
Friction-disc overload clutches pre-set at 200–600 Nm. Extends gearbox life in rocky or debris-heavy fields where peak torque spikes are frequent.
Tiller Blades & Flanges
Hardened L- and C-type blades, flange hubs, and blade holders compatible with the EP-75 output shaft profile.
Request a Quote or Technical Datasheet
Whether you need a single replacement rotary tiller cultivator gearbox or a full-container OEM order, our sales engineering team can confirm availability, provide certified test reports, and arrange DDP/FOB shipment to your port. Response time is typically within 1 business day.
Looking for other gearbox types? We manufacture a full range of precision drives for agricultural and industrial applications:
- EP-NMRV Series Worm Reducer (Aluminium) — Compact, right-angle worm gearboxes in 025–150 frame sizes for conveyor, packaging, and light-duty agricultural feeds.
- Planetary Gearbox Series — High torque-density inline reducers for high-cycle, precision-demand applications up to 50,000 Nm output torque.
- Helical Gearbox Series — Parallel-shaft and right-angle helical units for mixers, elevators, and heavy agricultural conveyors where efficiency above 96% is required.
- Bevel-Helical Gearbox Series — Right-angle heavy-duty drives suited to combine harvester headers and forage choppers operating at continuous rated torque.
- PTO Gearbox Series — Purpose-built for tractor three-point linkage implements: mowers, slashers, spreaders, and tillers across the 20–200 HP range.
Contact us today — specify your tractor HP, ratio requirement, and annual volume, and we will return a competitive unit price with full technical documentation within 24 hours.
EP-75 Rotary Tiller Cultivator Gearbox · HC-75 Series · ISO 9001 Certified · CQC Verified · Precision-built for global agricultural implement markets.
