Systems and components for mechanical engineering and plant engineering - Couplings

Product catalog summary

Overview: The document provides comprehensive technical specifications and guidelines for various mechanical couplings, bearings, and seals used in engineering applications. It includes details on rigid couplings, keyless locking couplings, cardan joints, quick-fit couplings, bearings, and seals.

Specifications: Detailed specifications are provided for different coupling types such as metal bellows, elastomer, and beam couplings. Key features include high torsion resistance, low mass moments of inertia, and minimal restoring forces on bearings. Temperature ranges and speed capabilities are specified for each type.

Technical Information: The document compares different coupling types, emphasizing zero backlash and flexibility for accurate torque transmission. It highlights functional features, connection elements, hub versions, and temperature ranges.

Configuration and Assembly: Guidelines for coupling configuration and assembly are provided, including shaft displacement considerations and recommended shaft tolerances. Proper installation is stressed to avoid damage to components.

Tables and Data: Several tables provide data on nominal torque, moment of inertia, torsion resistance, and other mechanical properties for various coupling models. Dimensions and tightening torque specifications for screws used in assembly are also included.

Materials and Versions: Materials used in coupling construction, such as aluminum and stainless steel, are specified. The document describes the bright finish of components and provides sample order information and customization options for hub bores.

Recommendations: Recommendations include ensuring proper shaft to hub bore fit and careful installation to prevent damage. The document advises on procedures for enlarging pre-drilled bores and highlights the maintenance-free nature of the couplings.

Keyless Locking Couplings Overview: Specifications and assembly instructions for keyless locking couplings, including Forms B, C, D, E, and F, are detailed. These couplings are designed for medium to high torques, self-centering capabilities, and minimal axial offset.

Shrink Discs Overview: Shrink discs connect a hollow hub to a shaft, suitable for static, dynamic, and shock loads. They are designed for high torques without axial shaft/hub offset during assembly.

Universal Joints: Used for mechanical power transmission at high speeds, with a maximum working angle of 45° for single joints and 90° for double joints. Maintenance involves daily lubrication.

Bearings and Guide Bushes: Specifications for bronze guide bushes, plastic plain bearings, and steel composite bearings are provided, highlighting their materials, dimensions, and performance characteristics.

Conclusion: The document emphasizes maintenance-free and self-lubricating features of components, making them ideal for various industrial applications.

Catalog excerpts

Systems and components for mechanical engineering and plant engineering - Couplings-1

Couplings Rigid couplings Keyless locking couplings Cardan joints Quick-fit couplings Bearings Seals

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Systems and components for mechanical engineering and plant engineering - Couplings-2

Technical information for couplings Note: The zero backlash, flexible metal bellows or elastomer couplings are particularly suited to highly accurate drives with average torque values. They are the ideal solution for accurately connecting two shaft journals at a true angle. Axial, radial and angular displacement between two ends of a shaft can be compensated within defined limits. This produces minimal bearing stresses as a result of the low restoring forces. A strong shaft to hub connection guarantees zero backlash transmission of torque, even without additional parallel key. Low mass moments...

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Systems and components for mechanical engineering and plant engineering - Couplings-3

23000 Metal bellows couplings Version: Bright. Sample order: nlm 23000-012, D1 = 6 D2 = 6 (The hubs are supplied pre-bored). On request: Hub bores D1 and D2 with separate tolerance class or range. Note: Radial clamping of the hub for short mounting times and easy installation even in difficult to reach spaces. Take note of the required clamping screw tightening torque. Drawing reference: 1) EASY clamp system from size 20 Assembly: The shaft to hub bore fit should be a transition fit. The play should be min. 0.01 mm and max. 0.04 mm. i.e: shaft Ø 28 k6 bore Ø 28 F6. Bores smaller than D1/D2 min....

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Systems and components for mechanical engineering and plant engineering - Couplings-4

23002 Metal bellows couplings clamping with grub screw L2 Material: Hub aluminium. Bellows stainless steel. Version: Bright. Sample order: nlm 23002-0004, D1 = 3 D2 = 3 (The hubs are supplied pre-bored). Note: Clamping the hub with a grub screw is a cost-effective alternative to the metal bellows couplings with radial clamping hub (23000). Short mounting times and an easy installation even in difficult to reach places. Take note of the required tightening torque for the grub screw. To ease removal, a flat milled on the shaft is recommended. Temperature range: -20 °C to +90 °C. Assembly: The shaft...

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Systems and components for mechanical engineering and plant engineering - Couplings-5

23010 Beam couplings with radial clamping hub, aluminium L1 Material: Aluminium. Version: Bright. Sample order: nlm 23010-1016, D1 = 2.5 D2 = 2.5 (The hubs are supplied pre-bored). Attention: Procedure for enlarging pre-drilled bores D1/D2: Note: Zero backlash, torsionally rigid, resiliently flexible and maintenance-free full metal coupling for transmitting angle synchronous rotary movement. The innovative slit structure makes possible a very good axial, radial and angular flexibility with low reset force. Ideal for servomotors. Temperature range: -50 °C to +150 °C. Drill the bore out using a...

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Systems and components for mechanical engineering and plant engineering - Couplings-6

23010 Beam couplings with radial clamping hub, stainless steel L1 Material: Stainless steel 1.4305. Version: Bright. Sample order: nlm 23010-2016, D1 = 2.5 D2 = 2.5 (The hubs are supplied pre-bored). Attention: Procedure for enlarging pre-drilled bores D1/D2: Note: Zero backlash, torsionally rigid, resiliently flexible and maintenance-free full metal coupling for transmitting angle synchronous rotary movement. The innovative slit structure makes possible a very good axial, radial and angular flexibility with low reset force. Ideal for servomotors. Drill the bore out using a small as possible...

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Systems and components for mechanical engineering and plant engineering - Couplings-7

23012 Beam couplings with removable clamping hub, aluminium L1 Material: Aluminium. Version: Bright. Note for ordering: D1 and D2 are customer specific e.g. 23012-1025; D1 = 5H7, D2 = 8H7 Note: Zero backlash, torsionally rigid, resiliently flexible and maintenance-free full metal coupling for transmitting angle synchronous rotary movement. The innovative slit structure makes possible a very good axial, radial and angular flexibility with low reset force. Ideal for servomotors. Assembly: Recommended shaft tolerances h7. Moment of inertia (10⁻³ kgm²) Max. axial shaft displacement ± Max. lateral...

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Systems and components for mechanical engineering and plant engineering - Couplings-8

23012 Beam couplings with removable clamping hub, stainless steel L1 Material: Stainless steel 1.4305. Version: Bright. Note for ordering: D1 and D2 are customer specific e.g. 23012-2025; D1 = 5H7, D2 = 8H7 Note: Zero backlash, torsionally rigid, resiliently flexible and maintenance-free full metal coupling for transmitting angle synchronous rotary movement. The innovative slit structure makes possible a very good axial, radial and angular flexibility with low reset force. Ideal for servomotors. Temperature range: -50 °C to +150 °C. Assembly: Recommended shaft tolerances h7. Moment of inertia...

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Systems and components for mechanical engineering and plant engineering - Couplings-9

23021 Elastomer dog couplings with conical hub and clamping ring (similar to DIN 69002) L On request: Hub bores D1 and D2 with separate tolerance class or range. Drawing reference: 1) elastomer spider Moment of inertia (10⁻³ kgm²) Static resistance to torsion Nm/arcmin Max. axial shaft displacement ± Max. lateral shaft displacement Radial spring stiffness N/mm Tightening torque of screws Nm Assembly: The shaft to hub bore fit should be a transition fit. The play should be max. 0.02 mm. i.e: shaft Ø 25 k6 bore Ø 25 G6. Bores smaller than D1/D2 min. are possible, however an optimal transfer of...

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Systems and components for mechanical engineering and plant engineering - Couplings-10

23022 Elastomer dog couplings with radial clamping hub Material: Spider polyurethane hardness Shore 98A. Hub aluminium. Version: Bright. Sample order: nlm 23022-008, D1 = 6 D2 = 6 (The hubs are supplied pre-bored). Assembly: The shaft to hub bore fit is a transition fit. The play should be min. 0.01 mm and max. 0.04 mm i.e. shaft: Ø 28 k6 hub: Ø 28 F6 Bores smaller than D1/D2 min. are possible, however an optimal transfer of the couplings nominal torque is no longer guaranteed. Note: Radial clamping of the hub for short mounting times. The couplings can be mounted completely assembled or a plug-in...

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Systems and components for mechanical engineering and plant engineering - Couplings-11

clamping with grub screw Material: Spider polyurethane hardness Shore 98A. Hub aluminium. Version: Bright. Sample order: nlm 23023-0020, D1 = 3 D2 = 3 (The hubs are supplied pre-bored). Note: Clamping the hub with a grub screw is a cost-effective alternative to the elastomer dog couplings with radial clamping hub (23022). Short mounting times. The couplings can be mounted completely assembled or plug-in mounting is also possible. Lightly oil the spider to ease assembly. Take note of the required tightening torque for the grub screw. To ease removal we recommend milling a flat on the shaft. Assembly:...

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