Product Introduction
The SAF67 is a mid-range helical-worm gear unit designed to bridge the gap between high-torque performance and cost-effective operation. By combining a helical gear stage with a worm gear stage, the SAF67 achieves significantly higher efficiency than pure worm gearboxes.
This specific configuration features a Hollow Shaft for direct machine integration and is paired with an IE3 Premium Efficiency Motor (DRN series). The combination ensures that the drive system complies with international energy efficiency regulations while providing a compact, right-angle power transmission solution for demanding industrial environments.
Technical Data Table
| Feature | Specification |
| Power Range | 0.75 kW to 4.0 kW (Depending on Motor Frame) |
| Efficiency Standard | IE3 (IEC 60034-30-1) |
| Output Shaft Dia. | 40 mm (Hollow Shaft) |
| Housing Material | Grey Cast Iron |
| Lubrication Type | CLP PG (Polyglycol) / CLP HC |
| Protection Class | IP55 Standard (IP65 optional) |
| Sound Level | Low noise helical-worm meshing |
Product Characteristics
High Overhung Load Capacity: The SAF67 housing and bearing construction are specifically reinforced to handle higher radial forces compared to the smaller 57 series, making it ideal for heavy conveyor pulleys.
Optimized Helical-Worm Synergy: Unlike standard worm drives, the SAF67 uses an initial helical stage to reduce the input speed to the worm set, minimizing heat friction and maximizing mechanical service life.
Torque-Dense Compactness: The right-angle design allows for the motor to sit parallel to the driven machine, significantly reducing the lateral footprint in tight factory layouts.
Mounting Flexibility & Accessory Integration
The SAF57 is built on a modular platform that allows for rapid adaptation. The "A" series hollow shaft is bored to high tolerances, allowing it to slide directly onto the driven machine's shaft. This reduces the total footprint of the drive system by up to 25% compared to parallel shaft configurations. Furthermore, the flange interface is compatible with various adapter plates, making it a "drop-in" replacement for legacy systems.
Related Models & Configurations
| Full Gearmotor Model | Mounting Mode | Motor Efficiency | Output Torque | |
| SAF67-DRN90S4 | Flange | IE3 | 315 Nm | |
| SA67-DRN100L4 | Foot-Mounted | IE3 | 450 Nm | |
| SAFS67-DRN112M4 | Flange + Keyed | IE3 | 600 Nm | |
| SHF67-DRN80M4 | Flange + Shrink Disc | IE3 | 240 Nm |
Application Industries
Automotive Assembly: Heavy-duty skid conveyors and lift stations.
Timber & Lumber: Powering log feeds and sorting tables where shock loads are frequent.
Chemical Processing: Driving medium-sized agitators and mixers requiring right-angle torque.
Logistics: High-capacity belt conveyors and telescopic loaders.
FAQ
1. How does the SAF67 efficiency compare to the smaller SAF57?
The SAF67 is engineered to handle higher thermal ratings. While both use helical-worm technology, the SAF67 offers better heat dissipation and higher torque-to-weight ratios for continuous duty cycles.
2. Is the hollow shaft version (SAF) better than the solid shaft (SF) for my application?
The hollow shaft (SAF) is generally preferred for modern designs as it mounts directly onto the driven shaft, eliminating the need for expensive couplings and alignment procedures required by solid shaft (SF) models.
3. What oil should be used for the SAF67?
We recommend using synthetic oil (such as CLP PG) for helical-worm units. Synthetic oils reduce internal friction and increase the efficiency of the worm stage, extending the time between maintenance intervals.
4. Does the IE3 motor come with a brake?
Brakes (such as the BE series) are optional. For lifting or precise positioning, we recommend adding a fail-safe electromagnetic brake to the DRN motor frame.
5. Can this model handle vertical mounting?
Yes, but the mounting position (M1 through M6) must be specified at the time of ordering to ensure the correct oil level and breather valve placement.
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