Product Introduction
The SEW X3KT260e/HH/B High Torque Mixer Gearbox is a continuous-duty industrial bevel-helical gear unit specifically engineered for heavy mixing, agitation, chemical reaction, and slurry processing equipment. Operating in harsh processing environments subjects drive systems to excessive dynamic torque fluctuations, high radial bending moments, and heavy axial thrust. This gearbox is designed to deliver uncompromised mechanical reliability, superior load distribution, and extended service life under demanding operating conditions.
Our high-performance replacement gearbox provides complete dimensional, mechanical, and structural compatibility with original installations. Built as an exact drop-in solution, it matches standard mounting centers, shaft heights, torque arm connections, and power ratings seamlessly. It is an optimal solution for emergency equipment replacements, scheduled plant overhauls, and OEM machinery manufacturing without requiring expensive foundation or piping modifications.
Technical Specifications
|
Parameter |
Technical Specification |
|
Model Designation |
SEW X3KT260e/HH/B High Torque Mixer Gearbox |
|
Gear Architecture |
3-Stage Bevel-Helical Gear Set |
|
Housing Configuration |
Horizontal Split Housing (HH) |
|
Mounting Type |
Foot Mounted (/B) with Torque Arm Bracket (T) |
|
Torque Class |
Nominal Output Torque up to 217 kNm (260e Frame Size) |
|
Gear Material |
20CrMnTi Premium Alloy Steel |
|
Heat Treatment |
Case Hardened (Carburized) & Precision Ground |
|
Gear Precision Class |
ISO 1328 Grade 5 / AGMA 11 |
|
Shaft Material |
High-Tensile Forged 42CrMo Steel |
|
Output Interface |
Hollow Shaft with Shrink Disc / Keyed Hollow Shaft |
|
Transmission Efficiency |
96% – 98% (3-Stage Configuration) |
|
Bearings |
Heavy-Duty Spherical / Tapered Roller Bearings |
|
Noise Rating |
≤ 80 dB(A) at 1 Meter Load Conditions |
|
Protection Rating |
IP55 Standard (IP65/IP66 Optional) |
Mechanical & Design Features
Optimized Gear Micro-Geometry: Teeth profiles feature ground lead and profile modifications (flank easing) to eliminate edge loading, lower dynamic stress, and guarantee smooth gear meshing.
Heavy-Duty Bearing Arrangement: Shafts are supported by reinforced roller bearings with increased bearing spans specifically designed to absorb significant fluid forces and shaft deflection.
High-Rigidity Cast Housing: Gray iron horizontal split housing designed with internal ribbing provides high torsional stiffness to keep gear alignments stable under extreme peak torques.
Advanced Multi-Stage Sealing: Synthetic FKM double-lip seals combined with dust-deflector rings prevent process fluid contamination and oil leakage along high-speed and output shafts.
Target Industry Applications
This heavy-duty gearbox is designed specifically for process industries requiring high rotational torque and structural strength:
Chemical & Petrochemical Processing: Agitators, continuous reactors, batch mixers, and polymerizers.
Mining & Mineral Extraction: High-density slurry agitators, leach tanks, conditioning vessels, and flotation cells.
Wastewater Treatment: Sludge digesters, heavy mixers, flocculators, and continuous aeration basins.
Pulp & Paper: Stock chest agitators, pulper drives, and chemical bleaching tanks.
General Industrial Processing: Food viscous mixing vats, fertilizer slurry tanks, and biofuel fermentation vessels.
Quality Control & Verification Standard
Material Quality Assurance: All raw steel forgings undergo ultrasonic flaw detection and material certification prior to machining.
Precision Measurement: Gear teeth dimensions are verified using 3D Coordinate Measuring Machines (CMM) to ensure AGMA/ISO compliance.
Dynamic Testing: 100% of completed gearboxes undergo factory spin testing to verify oil seal tightness, operating temperature stability, vibration velocity, and acoustic output.
Customization Options
Engineering modifications can be supplied based on specific site requirements:
Custom Gear Ratios: Non-standard output speeds engineered to match specific process fluid viscosities and mixing speeds.
Upgraded Bearing Packages: Special heavy-load bearings designed for long unsupported vertical output shafts.
Environmental Coatings: Epoxy-polyurethane multi-coat paint systems resistant to acidic, alkaline, marine, or atmospheric corrosion.
Sensors & Monitoring: Mounting ports for vibration sensors, oil level switches, and PT100 temperature probes.

FAQ
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