{"id":913,"date":"2026-09-10T04:02:01","date_gmt":"2026-09-10T04:02:01","guid":{"rendered":"https:\/\/nm-coupling.net\/products\/nm194-flexible-coupling\/"},"modified":"2026-09-10T06:14:06","modified_gmt":"2026-09-10T06:14:06","slug":"nm194-flexible-coupling","status":"publish","type":"ep_nm_product","link":"https:\/\/nm-coupling.net\/th\/products\/nm194-flexible-coupling\/","title":{"rendered":"NM194 Flexible Coupling"},"content":{"rendered":"
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Model specifications<\/span><\/p>\n

NM194 technical data<\/h2>\n<\/div>\n

NM194 moves into the large end of the NM range with 840 N.m nominal torque and an 85 mm maximum bore. Unlike NM168, its rated speed limit is 1500 rpm, so speed becomes a decisive selection check rather than a secondary line in the table.<\/p>\n<\/div>\n

\u0e41\u0e1a\u0e1a\u0e2d\u0e22\u0e48\u0e32\u0e07<\/th>Nominal torque<\/th>Speed limit<\/th>D<\/th>D1<\/th>d max<\/th>L<\/th>S<\/th>Radial<\/th>Angular<\/th><\/tr><\/thead>
NM194<\/a><\/strong><\/td>840 N.m<\/span><\/td>1500 rpm<\/span><\/td>194 mm<\/span><\/td>140 mm<\/span><\/td>85 mm<\/span><\/td>100 mm<\/span><\/td>3.5 +\/- 1.5 mm<\/span><\/td>0.10 mm<\/span><\/td>2.0 deg<\/span><\/td><\/tr><\/tbody><\/table><\/div>

D, D1, d max, L, S and radial values are in millimetres. Angular displacement is shown in degrees. On smaller screens, drag the table horizontally to view all columns.<\/p><\/section>\n

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Shaft interface<\/span><\/p>\n

Fit and machining checks<\/h2>\n

This coupling is 194 mm in outside diameter and 100 mm long. Allow enough room for the rotating envelope, guard and maintenance access, and verify that shaft shoulders do not interfere with the required hub position.<\/p>\n<\/div>\n

Operating duty<\/span><\/p>\n

Where this size fits<\/h2>\n

NM194 can be evaluated for higher-torque pumps, compressor auxiliaries and process equipment that operate within the 1500 rpm limit. Provide start method, load changes and shock details because the large nominal rating does not replace a duty review.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Alignment and assembly<\/h2>\n

The specified S value is 3.5 +\/- 1.5 mm. Radial misalignment is limited to 0.10 mm and angular misalignment to 2.0 degrees. A heavy machine train should be aligned after piping, guards and other connected loads are in their final condition.<\/p>\n

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D \/ D1<\/strong>194 \/ 140 mm<\/span><\/div>\n
L \/ S<\/strong>100 mm \/ 3.5 +\/- 1.5 mm<\/span><\/div>\n
Alignment<\/strong>0.10 mm radial \/ 2.0 deg angular<\/span><\/div>\n<\/div>\n<\/div>\n
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Prepare the NM194 RFQ<\/h2>\n

For NM194, send the exact running speed before anything else if the machine is near 1500 rpm. Then add both bores and keyways, design torque, driven equipment, quantity and any drawing-controlled machining requirement.<\/p>\n

Use the NM selection guide →<\/a><\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Flexible element<\/span><\/p>\n

Material and service conditions<\/h2>\n<\/div>\n

The standard ring material is NBR. If the installation has heat, oil, chemicals or a specified elastomer hardness, include those conditions so the quoted element matches the service requirement.<\/p>\n<\/div>\n

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Element<\/h3>\n

State the required material or service environment; do not identify elastomer chemistry by colour alone.<\/p>\n<\/div>\n

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Machining<\/h3>\n

List the driving and driven bores and keyways separately, including controlled fits where required.<\/p>\n<\/div>\n

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Speed<\/h3>\n

NM194 is rated to 1500 rpm; verify actual running speed before final selection.<\/p>\n<\/div>\n

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Torque<\/h3>\n

The nominal rating is 840 N.m. Describe unusual starts, reversing or shock in the enquiry.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Compare the nearest NM sizes<\/h2>\n

If 840 N.m or 85 mm bore capacity is not enough, NM214 is the next size and keeps the same 1500 rpm speed class. If the machine runs above 1500 rpm, return to the selection basis rather than simply upsizing.<\/p>\n

NM168<\/a>NM214<\/a><\/div>\n<\/div>\n
Compare all NM sizes<\/a><\/div>\n<\/div>\n<\/section>\n
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NM194 quick answers<\/h2>\n
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\nWhat torque and speed define NM194?<\/summary>\n
NM194 is listed at 840 N.m nominal torque with a 1500 rpm rated speed limit.<\/div>\n<\/details>\n
\nHow large can the finished bore be?<\/summary>\n
The stated maximum bore is 85 mm. Bore, keyway and fit still need to be checked together for the ordered hub.<\/div>\n<\/details>\n
\nWhat shaft data should I send?<\/summary>\n
Send the driving and driven shaft diameters, both keyways, running speed, duty, quantity and any drawing-controlled fit.<\/div>\n<\/details>\n<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"

NM194 provides 840 N.m nominal torque, up to 85 mm bore capacity and a rated speed limit of 1500 rpm. It is suited to higher-torque pumps, compressors and process equipment when torque, shaft fit, alignment and installation space are all within the model limits.<\/p>","protected":false},"featured_media":931,"template":"","class_list":["post-913","ep_nm_product","type-ep_nm_product","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/nm-coupling.net\/th\/wp-json\/wp\/v2\/ep_nm_product\/913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nm-coupling.net\/th\/wp-json\/wp\/v2\/ep_nm_product"}],"about":[{"href":"https:\/\/nm-coupling.net\/th\/wp-json\/wp\/v2\/types\/ep_nm_product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nm-coupling.net\/th\/wp-json\/wp\/v2\/media\/931"}],"wp:attachment":[{"href":"https:\/\/nm-coupling.net\/th\/wp-json\/wp\/v2\/media?parent=913"}],"curies":[{"name":"\u0e14\u0e31\u0e1a\u0e40\u0e1a\u0e34\u0e25\u0e22\u0e39\u0e1e\u0e35","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}