{"id":17539,"date":"2026-11-07T15:48:31","date_gmt":"2026-11-07T14:48:31","guid":{"rendered":"https:\/\/ventsystems.de\/rohrmotor-35-oder-45-mm\/"},"modified":"2026-11-07T15:48:31","modified_gmt":"2026-11-07T14:48:31","slug":"rohrmotor-35-oder-45-mm","status":"publish","type":"post","link":"https:\/\/ventsystems.de\/en\/rohrmotor-35-oder-45-mm\/","title":{"rendered":"Tubular motor 35 or 45 mm? Choosing the right size"},"content":{"rendered":"

In brief:<\/strong> The motor size depends on the shaft: a 35 mm motor fits 40 mm octagonal shafts, a 45 mm motor fits 60 mm octagonal shafts and larger. 35 mm motors have less torque and suit small, light roller shutters.<\/p>\n

Comparison<\/h2>\n\n\n\n\n\n\n\n\n
<\/th>\n35 mm<\/th>\n45 mm<\/th>\n<\/tr>\n<\/thead>\n
Shaft<\/td>\n40 mm octagonal<\/td>\n60 mm octagonal and larger<\/td>\n<\/tr>\n
Torque (A-OK)<\/td>\n6 or 10 Nm<\/td>\n6 to 50 Nm<\/td>\n<\/tr>\n
Application<\/td>\nsmall roller shutters, roller blinds, screens<\/td>\nstandard roller shutters, awnings, small roller doors<\/td>\n<\/tr>\n
Example<\/td>\nA-OK AM35<\/a>, ab 69 \u20ac<\/td>\nAM45 mechanical<\/a> ab 65 \u20ac, AM45 radio<\/a> from \u20ac100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

How to find your size<\/h2>\n
    \n
  1. Open the inspection cover and measure the shaft (width across flats), see Octagonal shaft<\/a>.<\/li>\n
  2. Note the roller shutter size and material.<\/li>\n
  3. Determine the torque with the Roller shutter motor calculator<\/a> .<\/li>\n
  4. Choose the motor and suitable adapters.<\/li>\n<\/ol>\n

    Frequently asked questions<\/h2>\n

    Can I install a 45 mm motor in a 40 mm shaft?<\/h3>\n

    No, it does not fit. Conversely, a 35 mm motor in a 60 mm shaft is only possible with suitable adapters and usually too weak.<\/p>\n

    How much space does the motor need in the box?<\/h3>\n

    Next to the shaft end there must be room for the motor head and the bracket. The motor length is in the data sheet.<\/p>\n

    All guides on roller shutter, awning and external venetian blind motors: Sun protection guide<\/a>.<\/p>\n

    Advice on the right motor<\/h2>\n

    Send us the shaft diameter, curtain size and material \u2013 we will name the right A-OK motor. Phone 040 50694631<\/a> (Mon\u2013Fri 8 am\u20135 pm) or via the Contact form<\/a>. All motors at a glance: Sun protection motors<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    35 or 45 mm tubular motor? Shaft diameter, torque and space in the box are decisive. With table and A-OK examples from \u20ac65 net.<\/p>","protected":false},"author":9,"featured_media":16991,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1959],"tags":[],"class_list":["post-17539","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-antriebstechnik"],"acf":[],"_links":{"self":[{"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/posts\/17539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/comments?post=17539"}],"version-history":[{"count":0,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/posts\/17539\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/media\/16991"}],"wp:attachment":[{"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/media?parent=17539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/categories?post=17539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ventsystems.de\/en\/wp-json\/wp\/v2\/tags?post=17539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}