Miniflex Paulstra

What is the SE150 flexible coupling?

The SE150 Miniflex flexible coupling is a compact push-fit coupling designed to transmit torque while absorbing operating irregularities and misalignment between two shafts.

Its design gives it a compact cylindrical shape, with no protruding or projecting parts, making it particularly suitable for installations where space is limited.

• Assembly: push-fit.
• Resilient element: natural rubber bonded to a V-shaped metal reinforcement.
• Hubs: aluminium or cast iron depending on the reference.
• Torque transmission: through drive fingers.

What are the advantages of the SE150?

✅ Pre-compression of the resilient element: this limits tensile loading of the rubber and improves its service life.

✅ Reduction of cyclic irregularities: the coupling effectively absorbs torque peaks and operating variations.

✅ Good misalignment tolerance: it accommodates significant misalignment and reduces the need for highly precise alignment between the machines being coupled.

✅ Compact design: its cylindrical shape makes it easy to integrate into confined spaces.

✅ Easy to use: assembly and disassembly are simple and quick.

How does the SE150 coupling work?

The SE150 operates using a natural rubber resilient element fitted between two hubs. During assembly, the resilient element is pre-compressed, improving its performance and extending the service life of the coupling.

This design makes it possible to:

• transmit torque between the two shafts,
• absorb shocks and rotational irregularities,
• compensate for a certain degree of radial misalignment between the coupled machines.

What applications is the SE150 suitable for?

The SE150 coupling is suitable for rotating machinery drives requiring flexible and compact torque transmission. It is particularly suitable for engines, pumps, generator sets and air-conditioning / ventilation equipment.

SE150 references and performance

The SE150 range covers several torque levels, with aluminium or cast iron hubs depending on the reference. The references currently listed in the price sheet are as follows:

The SE150 also allows a certain degree of radial misalignment depending on the torque level, with a capacity of up to 1 mm on the larger versions.

SE150 coupling dimensions

The diagram below shows the main installation dimensions of the SE150 coupling.

Reference	A	B	D	E	H	J	X
633040	45 mm	41 mm	28 mm	14 mm	21 mm	2 mm	14 mm
633010	58 mm	61 mm	36 mm	20 mm	31 mm	2 mm	16 mm
633020	80 mm	88 mm	48 mm	30 mm	40 mm	4 mm	28 mm
633041	45 mm	41 mm	28 mm	14 mm	21 mm	2 mm	14 mm
633039	58 mm	61 mm	42 mm	20 mm	31 mm	2 mm	16 mm
633038	84 mm	88 mm	63 mm	30 mm	40 mm	4 mm	28 mm
633047	118 mm	120 mm	82 mm	40 mm	55 mm	10 mm	38 mm

Maximum speeds range from 4,000 to 10,000 rpm depending on the reference, with maximum bore diameters of up to 55 mm.

How is the SE150 coupling installed?

The SE150 is assembled and disassembled axially. At least one of the two coupled machines must therefore be moved during the operation.

• Insert the opposite metal reinforcements of the resilient element halfway onto the drive fingers of one hub.
• Position the second hub.
• Bring the two hubs together until they reach the stops formed by the metal reinforcements of the resilient element.
• Allow the assembly to return to its operating position.

Need advice?

Our technical team can help you choose the correct SE150 reference according to the torque to be transmitted, rotational speed, bore diameter and installation conditions.

Have a project? Contact us!

Find out more

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