Introduction to Technical Specifications of STUWE Shrink Disc HSD Series

Introduction to Technical Specifications of STUWE Shrink Disc HSD Series

1、 Product technology positioning

The STUWE series products focus on the core requirements of connecting, fixing, and braking mechanical transmission systems, covering four major categories of key components, all of which have high precision, high reliability, and maintenance free characteristics, and can be adapted to industrial grade heavy-duty and high-speed working conditions:

STUWE shrink disc: As a high-precision shaft hub connection component, its core function is to achieve torque transmission and component positioning;

STUWE expansion sleeve: an elastic locking connector used for interference fit fixation of shafts and wheel hubs;

STUWE braking system: mechanical transmission safety control module, capable of providing precise braking torque;

STUWE shaft nut: a high-precision locking component that adapts to the axial fixing requirements of shaft components.

2、 Core technical parameters and characteristics of HSD type shrink disc

1. Structure and working principle

HSD type shrink disc is a detachable hollow shaft shaft connection component, which adopts a press fit interference fit design. Through pre tightening force, the shrink disc produces radial elastic deformation, achieving seamless fit between the shaft and the hub, and thus stably transmitting torque. Its structural characteristics endow the product with three core advantages:

Maintenance free feature: The interference fit surface has excellent sealing performance and is not easily corroded by pollutants such as dust and oil, reducing maintenance costs in the later stage;

High coaxiality: The coaxiality error between the rear axle and the wheel hub during assembly is small, fully meeting the accuracy requirements of precision transmission scenarios;

Detachable design: Simply remove the pre tightened bolts to separate the components, greatly facilitating the maintenance and repair process of the equipment.

2. Key technological advantages

Torque transmission capability: Suitable for high torque working conditions, the torque transmission range of a single set of shrink discs covers 1000N · m~50000N · m (specific values depend on model specifications);

Adaptive speed: Supports high-speed operation scenarios, with a speed of up to 3000r/min (to be confirmed based on actual shaft diameter and installation method);

Material characteristics: The main body is made of 42CrMo alloy steel, which has been quenched and tempered to a hardness of HRC28~32, possessing high strength, high toughness, and excellent fatigue resistance;

Corrosion resistance: The surface is treated with galvanized passivation, and the salt spray test life is ≥ 48 hours, which can adapt to various harsh industrial environments.

3. Typical application scenarios (technical adaptability)

Wind turbine transmission system: adapted to high torque transmission requirements, low maintenance requirements, and outdoor environment anti-corrosion requirements, used for connecting the wind turbine main shaft and gearbox;

Packaging machine/luggage sorting system: With the advantage of high coaxiality and fast start stop adaptability, it ensures precise transmission and positioning of the conveying mechanism;

Coupling and gearbox connection: Simplify the assembly process, reduce transmission clearance, effectively improve the transmission efficiency and service life of the gearbox and coupling;

Motor pump connection (industrial pump, centrifugal pump, plunger pump): achieve seamless transmission, avoid relative displacement between pump shaft and motor shaft, and reduce equipment vibration and operating noise;

Bearing fixation: Provides stable radial preload to prevent axial movement or radial looseness of the bearing during high-speed operation, extending the service life of the bearing.

4. Standard model specifications (technical parameters)

STUWE HSD280-23: Suitable for shaft diameter range of 180-280mm, transmitting torque of 48000N · m, pre tightened bolt specification M24 × 150, weight 85kg;

STUWE HSD260-23: Suitable for shaft diameter range of 160-260mm, transmitting torque of 42000N · m, pre tightened bolt specification M24 × 140, weight 72kg;

STUWE HSD240-23: Suitable for shaft diameter range of 140~240mm, transmission torque of 36000N · m, pre tightened bolt specification M24 × 130, weight 60kg;

STUWE HSD220-23: Suitable for shaft diameter range of 120-220mm, transmission torque of 30000N · m, pre tightened bolt specification M20 × 120, weight 48kg;

STUWE HSD200-23: Suitable for shaft diameter range of 100-200mm, transmission torque of 25000N · m, pre tightened bolt specification M20 × 110, weight 38kg;

STUWE HSD185-23: Suitable for shaft diameter range of 90~185mm, transmission torque of 20000N · m, pre tightened bolt specification M18 × 100, weight 30kg;

STUWE HSD175-23: Suitable for shaft diameter range of 80~175mm, transmission torque of 16000N · m, pre tightened bolt specification M18 × 90, weight 25kg;

STUWE HSD165-23: Suitable for shaft diameter range of 70~165mm, transmission torque of 12000N · m, pre tightened bolt specification M16 × 85, weight 20kg;

STUWE HSD155-23: Suitable for shaft diameter range of 60~155mm, transmission torque of 9000N · m, pre tightened bolt specification M16 × 80, weight 16kg;

STUWE HSD140-23: Suitable for shaft diameter range of 50-140mm, transmitting torque of 6000N · m, pre tightened bolt specification M14 × 75, weight 12kg.

3、 Technical selection suggestions

Torque matching: The corresponding model should be selected based on 1.2~1.5 times the actual working torque of the equipment to ensure reliable operation under overload conditions;

Shaft diameter adaptation: It is necessary to ensure that the fit tolerance between the shaft and the hub meets the H7/k6 standard, in order to avoid affecting the use effect due to excessive fit clearance or interference fit;

Installation requirements: Pre tightened bolts should be tightened with a torque wrench according to the specified torque (please refer to the product technical manual for specific values) to ensure uniform deformation of the shrink disc and ensure connection accuracy;

Environmental adaptation: If the application scenario is in a high temperature (>120 ℃) or corrosive environment, customized models with special material coatings need to be selected to meet environmental adaptability requirements.

Introduction to Technical Specifications of STUWE Shrink Disc HSD Series