Product Overview
The SEW K Series KA19 KA29 Hollow Shaft Helical Gear Reducer is designed for equipment layouts where direct shaft mounting and compact installation are preferred. By using a hollow output shaft, the reducer connects directly to the driven shaft, eliminating the need for additional couplings and simplifying mechanical alignment.
KA19 and KA29 models are typically selected for applications that require stable speed reduction rather than high peak torque. The helical gear arrangement supports smooth power transfer and helps maintain consistent operation during continuous or intermittent duty cycles.
With mounting dimensions aligned to SEW KA series standards, this gearbox can be integrated into existing machinery with minimal structural changes. Its straightforward mechanical design and practical configuration make it suitable for conveyors, packaging equipment, and other compact industrial systems where reliability and ease of installation are valued.
Product parameters
| Parameter | KA19 | KA29 |
|---|---|---|
| Gear type | Helical | Helical |
| Gear stages | 2 stages | 2 / 3 stages |
| Ratio range | i ≈ 5 – 70 | i ≈ 6 – 100 |
| Max. output torque (Nm) | up to ~200 | up to ~430 |
| Input power (kW) | up to ~0.75 | up to ~2.2 |
| Output shaft | Hollow shaft | Hollow shaft |
| Shaft connection | Keyway / Shrink disc | Keyway / Shrink disc |
| Mounting method | Shaft-mounted | Shaft-mounted |
| Housing material | Cast iron | Cast iron |
Helical Gear Transmission
The internal helical gear set provides smooth engagement and consistent torque output. Compared with straight-cut gears, the helical design lowers operating noise and improves load distribution, making the reducer suitable for continuous operation.
Installation Compatibility
The SEW K Series KA19 KA29 Hollow Shaft Helical Gear Reducer is designed with installation compatibility as a key consideration, particularly for replacement and retrofit projects. The hollow shaft dimensions and mounting interfaces are aligned with common SEW KA series standards, allowing the reducer to be mounted directly onto existing driven shafts without structural modification.
In practical installations, this compatibility reduces downtime during gearbox replacement. Existing base frames, torque arms, and support structures can typically be retained, which simplifies on-site work and lowers installation risk. For cement plant equipment and other industrial systems where access space is limited, the shaft-mounted design helps avoid complex alignment procedures.
The reducer supports multiple shaft connection methods, including keyway and shrink disc options, providing flexibility based on torque requirements and installation preferences. This allows engineers to adapt the unit to different operating conditions while maintaining a secure and reliable mechanical connection.
By matching standard motor interfaces and installation orientations, the SEW K Series KA19 KA29 Hollow Shaft Helical Gear Reducer can be integrated into both new machinery and existing drive systems with minimal adjustment. This approach supports faster commissioning and consistent performance across a wide range of industrial applications.
Typical Applications – Cement Plant Material Handling
In cement production facilities, material handling systems operate continuously under dusty conditions and fluctuating loads. The SEW K Series KA19 KA29 Hollow Shaft Helical Gear Reducer is commonly used in auxiliary conveying equipment where compact installation and reliable speed reduction are required.
In applications such as clinker return conveyors, raw material dosing conveyors, or limestone feed systems, the reducer is mounted directly onto the driven shaft. The hollow shaft configuration simplifies installation in confined spaces around chutes and transfer points, where traditional coupling arrangements are difficult to maintain.
During operation, the helical gear transmission provides steady torque output, helping the conveyor maintain uniform belt speed even when material flow varies. This is particularly important in cement plants, where uneven feeding can affect downstream grinding or blending processes.
The rigid housing and enclosed gear design support stable operation in high-dust environments when proper sealing and lubrication practices are followed. In routine plant operation, the SEW K Series KA19 KA29 Hollow Shaft Helical Gear Reducer helps reduce unplanned stoppages by maintaining consistent performance during long operating shifts, supporting overall production continuity.
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