Complete NM Couplings
Compare NM50 through NM214 by torque, speed, bore capacity and overall dimensions.
Compare models →NM flexible coupling manufacturer
NM Flexible Couplings for Pumps, Compressors & General Machinery
Source NM50 through NM214 from one technical range. Start with nominal torque, speed and shaft sizes; then define the bore, keyway, elastomer request and quantity for quotation.
NM50-NM214Ten sizes with model-specific torque, bore, speed, dimensions and alignment data.
10 sizesNM50-NM214
5-1000 N.mNominal torque range
19-95 mmMaximum bore range
1500 / 3000 rpmRated speed limits
Product range
Choose a complete NM coupling, replacement flexible element or related coupling family.
NM50 through NM214 cover a broad range of shaft sizes and industrial drive duties. Start with the complete coupling range when you know torque and shaft data, or send the existing size and operating conditions for replacement parts.
Flexible Elements & Hub Sets
Identify the NM size, shaft bores and operating conditions before ordering replacement components.
Replacement guide →
Related Flexible Couplings
HRC, pump-claw and star-style coupling options are available for applications that call for a different coupling construction.
View related families →NM50-NM214
Compare torque, speed and bore capacity.
Use the model cards for a quick comparison, then check the full table for D, D1, L, S and alignment values before finalising the size.
Why NM
A compact flexible connection for common industrial drives.
Two hubs engage an elastomer element that transmits torque while adding damping and allowing limited shaft misalignment. The result is a simple coupling format that is easy to inspect and replace when the machine layout provides suitable access.
Applications
NM couplings for pumps, compressors and general rotating equipment.
Selection changes with the machine duty. Torque, speed, both shaft interfaces, starting conditions, shock and alignment should be considered together.
Compressors
Coupling selection for loaded starts, torque variation and rotating compressor duties.
View application →Fans & Blowers
Speed, alignment and vibration checks for long-running fan and blower drives.
View application →Mixers & Conveyors
Starting load, reversing and shock checks for material-handling and process drives.
View application →Selection workflow
Four checks before you place the order.
Outside diameter alone is not enough. The selected model must carry the duty, accept both shafts and fit the available space.
Define the duty
Use operating torque or motor power and speed, then add starts, shock, reversing and the driven machine.
Choose a model
Select a size whose nominal torque and rated speed cover the operating point.
Check both shafts
Confirm each bore, keyway and the available envelope against d max, D, D1 and L.
Send the RFQ
Include quantity, destination, elastomer or material requests and any unusual operating conditions.
Global supply
NM coupling quotations for major machinery markets.
We support OEM, MRO and distribution enquiries in Germany, India, Italy, the United States, Japan and other industrial markets. Send shaft data in the units used on your drawing; we can work with metric or inch requirements where applicable.
Global supply
Germany
Metric shaft data, pump and machinery RFQs, and drawing-controlled bore requirements.
RFQ guidance →Global supply
India
Pump, compressor, OEM and distribution enquiries with mixed-model and replacement requirements.
RFQ guidance →Global supply
Italy
Machinery, packaging, pump and process-equipment projects with custom shaft interfaces.
RFQ guidance →Global supply
United States
Metric or inch shaft data for pump, compressor, machine-builder and MRO requirements.
RFQ guidance →Global supply
Japan
Drawing-led pump, automation and machinery requirements with careful interface control.
RFQ guidance →Have shaft sizes but no NM model?
Send motor power, running speed, both shaft diameters, keyways, driven equipment and quantity. We can narrow the range and confirm which dimensions need checking.
