Product Overview
The K67 / K77 / K87 Helical Bevel Gear Reducer | SEW-Eurodrive K Series Equivalent Gearbox is developed for industrial drive systems that require reliable torque transmission within a compact footprint. The right-angle helical bevel design allows efficient power transfer while maintaining stable operation under continuous load.
These gear reducers are commonly selected for equipment where installation space is limited and long-term operating stability is required. By aligning key mounting dimensions and shaft interfaces with SEW K series standards, the K67, K77, and K87 models can be integrated into existing systems with minimal structural modification.
Built with hardened gear sets and rigid housing construction, the reducer is suitable for conveyor systems, material handling equipment, and general industrial machinery where predictable performance and service continuity are essential.
Product parameters
| Item | K67 | K77 | K87 |
|---|---|---|---|
| Gear type | Helical bevel | Helical bevel | Helical bevel |
| Gear stages | 2 / 3 stages | 2 / 3 stages | 2 / 3 stages |
| Ratio range | i ≈ 5 – 160 | i ≈ 6 – 200 | i ≈ 7 – 250 |
| Max. output torque (Nm) | up to ~4,000 | up to ~7,000 | up to ~12,000 |
| Input power (kW) | up to ~18.5 | up to ~30 | up to ~55 |
| Output shaft | Solid / Hollow | Solid / Hollow | Solid / Hollow |
| Mounting options | Foot / Flange | Foot / Flange | Foot / Flange |
| Housing material | Cast iron | Cast iron | Cast iron |
Quality and Manufacturing Control
Quality control is integrated throughout the manufacturing process of the K67 / K77 / K87 Helical Bevel Gear Reducer | SEW-Eurodrive K Series Equivalent Gearbox, from raw material selection to final inspection. Gear blanks are produced using controlled casting processes, followed by precision machining to ensure dimensional consistency across all housing and shaft interfaces.
The helical bevel gears are manufactured from alloy steel and undergo heat treatment to improve surface hardness and fatigue resistance. Gear tooth profiles are machined and inspected to ensure smooth meshing, which helps reduce vibration and noise during operation. Each gear set is matched and assembled according to defined tolerance standards to maintain stable transmission performance.
During assembly, bearing preload, shaft alignment, and gear contact patterns are carefully checked. This step is critical for ensuring long service life under continuous load conditions, particularly in conveyor and material handling applications where operating cycles are long and consistent.
Before shipment, every gearbox is subjected to routine inspection procedures, including rotation testing and sealing checks. These inspections help verify proper assembly and ensure that lubrication retention and mechanical integrity meet operational requirements.
By maintaining consistent manufacturing procedures and inspection standards, the K67, K77, and K87 models deliver predictable performance and reliability, making them a dependable choice for both new installations and replacement of SEW K series gearboxes in industrial environments.
Customization and Support
The K67 / K77 / K87 Helical Bevel Gear Reducer | SEW-Eurodrive K Series Equivalent Gearbox can be supplied in a range of configurations to match specific application requirements. Selection is typically based on operating speed, load characteristics, installation space, and duty cycle.
Gear ratios can be adjusted to meet precise output speed demands, particularly in conveyor and material handling systems where synchronized motion is critical. Both solid and hollow shaft designs are available, with options for keyway or shrink disc connections depending on torque transmission needs and installation preferences.
Motor matching support is provided to ensure compatibility with standard IEC motors as well as customized motor solutions. Voltage, mounting orientation, and protection requirements can be considered during the selection process to achieve stable and efficient operation.
From a support perspective, technical assistance is available throughout the project cycle, from initial model selection to commissioning. Detailed dimensional drawings, installation guidance, and operating recommendations are supplied to reduce integration time and minimize on-site adjustments.
For replacement projects involving SEW K series gearboxes, special attention is given to dimensional alignment and interface compatibility. This approach allows the K67, K77, and K87 models to be introduced into existing systems with minimal disruption, supporting both short delivery schedules and long-term operational reliability.
Typical Applications – Conveyor Systems
In conveyor-driven production lines, stable torque output and precise speed control are essential for maintaining material flow and preventing unplanned downtime. The K67 / K77 / K87 Helical Bevel Gear Reducer | SEW-Eurodrive K Series Equivalent Gearbox is frequently applied in belt and roller conveyor systems where the drive unit must operate continuously under variable load conditions.
The right-angle helical bevel design allows the reducer to be mounted close to the conveyor frame, reducing overall system height and simplifying mechanical layout. In long-distance conveying applications, the reducer delivers consistent output speed, even when load fluctuations occur during start-up or product accumulation along the line.
For medium to heavy-duty conveyors, such as those used in logistics centers, packaging plants, or bulk material handling facilities, the K67, K77, and K87 models provide sufficient torque reserves to handle frequent start-stop cycles without excessive thermal stress. The rigid housing and optimized bearing arrangement help maintain shaft alignment, which contributes to smooth belt tracking and reduced maintenance requirements.
By matching common conveyor motor specifications and aligning with SEW K series mounting standards, this gearbox can be installed as part of new conveyor systems or used as a direct replacement in existing equipment with minimal adjustment.
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FAQ
Q1: Are the K67, K77, and K87 gear reducers compatible with SEW K series installations?
A1: Yes. The K67 / K77 / K87 Helical Bevel Gear Reducer | SEW-Eurodrive K Series Equivalent Gearbox is designed with mounting dimensions and shaft interfaces compatible with SEW K series gearboxes. It can be used as a direct replacement without modifying the existing equipment layout.
Q2: What types of loads can these gear reducers handle?
A2: These models are suitable for continuous-duty industrial applications, including medium and heavy loads. They are engineered with reinforced gear sets and optimized bearings to handle both radial and axial loads under normal operating conditions.
Q3: Can these gear reducers operate in high-temperature or harsh environments?
A3: Yes, the reducers are built with durable cast iron housings and high-quality gears. Proper lubrication and regular maintenance are recommended to ensure long-term performance in elevated temperature or dusty environments.
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