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Primary Product · NM Flexible Couplings

NM Couplings for Pumps, Compressors & Industrial Drives

Compare NM50–NM214 sizes, match both shaft interfaces and request finished bore/keyway machining for your application. Replacement rubber elements and selected supporting coupling types are also available.

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Primary Product Range

NM50–NM214 flexible couplings

Start with the NM size range, then confirm both shaft bores, keyways and operating duty for the ordered configuration.

Compare all 10 NM sizes →

Model Selection

NM coupling size reference

Check bore capacity, reference maximum speed and reference normal torque before moving to finished machining details.

ModelBore RangeReference Max SpeedReference Normal Torque
NM50 7-19 mm 12500 giri/minuto 1,3 kgfu00b7m View model
NM67 8-28 mm 10000 rpm 2.2 kgfu00b7m View model
NM82 10-32 mm 8000 rpm 5.0 kgfu00b7m View model
NM97 10-42 mm 7000 rpm 10.5 kgfu00b7m View model
NM112 14-48 mm 6000 rpm 16.7 kgfu00b7m View model
NM128 18-55 mm 5000 rpm 26.7 kgfu00b7m View model
NM148 22-65 mm 4500 rpm 41.7 kgfu00b7m View model
NM168 28-75 mm 4000 rpm 59.5 kgfu00b7m View model
NM194 32-85 mm 3500 rpm 112.0 kgfu00b7m View model
NM214 40-95 mm 3000 rpm 167.0 kgfu00b7m View model

Use the table to narrow the NM size. Finished bores, keyways and application duty are confirmed for the ordered configuration.

Selection Essentials

Match the coupling to both shafts and the duty

NM size selection is more reliable when the RFQ describes the complete drive connection instead of only a motor frame or an old coupling photo.

Measure both shafts

Specify each bore, keyway and fit independently.

Check operating speed

Compare the actual rpm with the reference maximum for the selected NM size.

Describe the machine duty

Include the driven equipment, starts, shock or reversing where relevant.

Confirm machining

Finished bores and keyways follow the order information for the two shafts.

Applicazioni

NM couplings in common drive systems

Pumps, compressors, gearboxes, fans, mixers and conveyors place different loads and maintenance demands on the shaft connection.

View all application guides →

RFQ Preparation

Four details that speed up an NM coupling quote

1

Identify the machine

Driver, driven equipment, speed and power or torque.

2

Choose a candidate size

Use the NM model range to check bore, speed and torque capacity.

3

Specify both hubs

Bores, keyways, fits and available axial space.

4

State the order scope

Sample, production or mixed-model quantity with any special requirements.

Supporting Products

Replacement elements and other coupling types

NM couplings are the main product range. These supporting families are available when the machine requires a different coupling construction.

View supporting coupling types →

Mercati

International NM coupling enquiries

Market guides highlight the units, drawing practices and procurement details that commonly affect bore/keyway quotation and replacement matching.

Approfondimenti

Selection, installation and replacement guides

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