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Datasheet KG-VA

Product catalog summary

Overview: The document provides technical specifications and features of all-stainless steel metal bellows couplings, designed for high-temperature applications up to 350°C. These couplings are wear and maintenance-free, torsionally stiff, and easy to install with a clamping hub.

Specifications:

Material: Bellows made of stainless steel 1.4571/A4, hubs of 1.4301/A2, and screws conforming to ISO 4762, stainless steel A4-80.
Temperature Range: -40°C to +350°C.
Design Variants: Available in 6-corrugated (6W), 4-corrugated (4W), and 2-corrugated (2W) metal bellows.
Dimensions: Length dimensions follow DIN ISO 2768 cH standards.

Technical Data:

Sizes range from 30 to 1000 Nm nominal torque.
Maximum shaft misalignment: Axial ±0.3 to ±1 mm, Lateral 0.1 to 0.3 mm.
Spring Rates: Axial spring rate ranges from 130 to 310 N/mm, lateral spring rate from 70 to 160 N/mm.
Maximum Speed (nmax): Ranges from 8500 to 23000 rpm depending on size.

Installation and Usage:

Clamping hubs are equipped with stainless steel screws A4-80, without EASY-pin, requiring attention to reduced actuation torques.
Transmission torques of hub-shaft connections should be checked for diameters below Dmin.
Alternative lengths or hub versions are available upon request.

Additional Notes: The connection between bellows and hub is achieved through plasma welding. For smaller nominal torque sizes, refer to the miniature couplings series MKG-VA.

Catalog excerpts

• Drive Technology Antrl_ • all-stainless steel version up to 350°C • wear and maintenance free • very short and variable design • torsionally stiff • simple installation with clamping hub technical data: Tn moment torsional max. shaft axiale lateral nmax. KG-VA of inertia stiffness misalignment [mm] spring rate spring rate size [Nm] [10-3kgm2] [Nm/arcmin] axial± lateral [N/mm] [N/mm] [upm] Sizes for smaller nominal torque see miniature couplings series MKG-VA temperature range: -40°C up to +350°C note: connection between bellows and hub by plasma welding Three standard variants with 6-corrugated metal bellows 6W, 4-corrugated metal bellows 4W or 2-corrugated metal bellows 2W Dimensions [mm]: length dimensions according to DIN ISO 2768 cH • clamping hubs generally with stainless steel screws A4-80 without EASY-pin - mind reduced actuation torques • check transmission torques of hub-shaft connection for diameters below Dmin (further inquiry possible) • alternative lenghts or hub versions available on request

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Datasheet KG-VA

Datasheet KG-VA

Catalog excerpts

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