Product Introduction
The SAZ57 is a compact powerhouse within the SEW S-series lineup. Unlike standard worm gearboxes that suffer from low efficiency, the SAZ57 integrates a helical gear primary stage. This design ensures that the sliding friction typical of worm gears is minimized, resulting in significantly higher mechanical efficiency and longer service intervals.
The "Z" designation signifies a specialized B5 flange-mounted version with a hollow shaft. This allows the unit to be mounted directly onto the machine's drive shaft, eliminating the need for expensive couplings and alignment-heavy baseplates. With a 1.5kW motor integration, it provides a balanced profile of high starting torque and smooth, continuous rotation.
Technical Specifications
| Parameter | Specification | Unit |
| Motor Power | 1.5 | kW |
| Output Speed | 15 – 180 (Based on ratio) | RPM |
| Output Torque | 80 – 300 | Nm |
| Hollow Shaft Diameter | 35 (Standard) | mm |
| Service Factor (fb) | 0.9 – 2.5 | - |
| Efficiency | ~65% - 92% (Ratio dependent) | % |
| Weight | Approx. 32 - 45 (Incl. Motor) | kg |
The SAZ57 Advantage
Unlike the smaller SA47 or the heavy-duty SA67, the SAZ57 occupies the "Sweet Spot" of industrial automation:
- Low-Noise Kinematics: The worm gear mesh acts as a natural dampener. When paired with the 1.5kW AC motor, the SAZ57 operates with significantly less decibel output than pure helical units, making it perfect for indoor logistics and sorting centers.
- Self-Locking Characteristics: Depending on the high gear ratios, this unit provides a level of inherent braking (back-driving resistance), which adds a layer of safety for inclined conveyors.
- Flange-Centric Design: The "Z" (B5 Flange) housing is machined for high-tolerance centering, ensuring that the gearmotor becomes a structural extension of your machine rather than just an attachment.
Component Structure & Modular Flexibility
The SAZ57 is built on SEW's Modular Gearmotor System. This means the 1.5kW motor is not permanently fixed; it can be swapped for a brakemotor (BE series), an encoder-integrated motor, or even a flame-proof version without changing the gearbox dimensions. The internal worm wheel is crafted from high-grade bronze alloy, paired with a case-hardened steel worm screw, ensuring the interface can withstand the thermal loads of a 1.5kW continuous duty cycle.
Related Models & Technical Matrix
| Model Variant | Mounting Type | Motor Power | Max Torque | Best For |
| SA57 | Foot-mounted | 1.1kW | 300 Nm | Heavy Base-mounting |
| SAF57 | B5 Flange (Standard) | 1.5kW | 300 Nm | General Flange mount |
| SAZ57 | B5 Flange (Short) | 1.5kW | 300 Nm | Compact axial space |
| SHZ57 | Hollow Shaft/Shrink Disc | 1.5kW | 300 Nm | Keyless shaft union |
Primary Industry Applications
Intralogistics: High-speed belt conveyors and cross-belt sorters.
Food & Beverage: Bottling line star-wheels and palletizing stations.
Wastewater Treatment: Agitators and small-scale aeration drives.
Automotive: Assembly line shuttles where right-angle space is at a premium.
FAQ
Q1: Can I use the SAZ57 with a Frequency Inverter?
A: Absolutely. The 1.5kW motor paired with the SAZ57 is fully compatible with the MOVITRAC or MOVIDRIVE series for precise speed ramping and torque control.
Q2: What is the advantage of the "Z" flange over the "F" flange?
A: The "Z" flange (SAZ) is a "shortened" B5 pilot flange. It is designed to minimize the total length of the drive, making it easier to integrate into machine frames where every millimeter counts.
Q3: Does the SAZ57 require specific oil?
A: Worm gears require high-performance synthetic lubricants (like CLP PG) to handle the sliding friction. SEW units usually come pre-filled based on your specified mounting position (M1-M6).
Hot Tags: sew saz57 hollow shaft helical-worm gearmotor 1.5kw, China sew saz57 hollow shaft helical-worm gearmotor 1.5kw suppliers, factory