{"id":10250,"date":"2026-04-17T23:25:20","date_gmt":"2026-04-17T21:25:20","guid":{"rendered":"https:\/\/solids.pl\/?post_type=katalog-czesci&#038;p=10250"},"modified":"2026-05-11T08:28:43","modified_gmt":"2026-05-11T06:28:43","slug":"spring-applied-multi-disc-drive-brake-liebherr","status":"publish","type":"katalog-czesci","link":"https:\/\/solids.pl\/en\/katalog-czesci\/spring-applied-multi-disc-drive-brake-liebherr\/","title":{"rendered":"LIEBHERR SPRING-APPLIED MULTI-DISC DRIVE BRAKE"},"content":{"rendered":"<p>The spring-applied multi-disc drive brake is an integral assembly of the final drive transmission in Liebherr tracked and wheeled machines, serving simultaneously as a parking and service brake. The brake housing is manufactured from alloy steel 42CrMo4 (heat-treated to 28\u201334 HRC), while the friction discs are made from case-hardened 16MnCr5 steel hardened to 58\u201362 HRC, with nominal working thickness of 3.5 mm and permissible wear of 0.4 mm per side. The multi-disc pack operates in an oil bath (wet brake), which mitigates fretting corrosion on clutch surfaces and abrasive wear of friction linings under nominal spring pressure of 180\u2013220 kN. Brake release occurs hydraulically at operating pressure of 35\u201345 bar, with holding torque exceeding 12,000 Nm at the output shaft. Belleville springs manufactured from stainless spring steel maintain clamping force stability across the temperature range of \u201340 \u00b0C to +120 \u00b0C, which is critical for operation in extreme conditions. Contact fatigue of the discs manifests as pitting and edge micro-cracking\u2014detected during penetrant inspection\u2014and constitutes grounds for complete pack replacement without selective regeneration. Liebherr recommends replacement of the brake as an assembly without separation of spring and disc components.<\/p>\n<h3>Compatible machines:<\/h3>\n<ul>\n<li>LR632-393<\/li>\n<li>LR632B-393<\/li>\n<li>PR732-350<\/li>\n<li>PR732B-350<\/li>\n<li>PR732BL-412<\/li>\n<li>PR732BM-351<\/li>\n<li>PR732L-412<\/li>\n<li>PR732M-351<\/li>\n<\/ul>\n<h3>Fits travel reducers \/ final drives:<\/h3>\n<ul>\n<li>500\/555<\/li>\n<li>FAT 500P595D<\/li>\n<\/ul>\n<p><small>Travel-system component for LIEBHERR construction machinery \u2014 used in travel reducers and final drives of crawler machines (excavators, crawler loaders, dozers) as well as in drive axles and wheel-hub planetary reductions of wheeled machines (wheel loaders, wheeled excavators). Industry synonyms: travel drive, final drive, drive axle, traction drive, travel reducer, planetary final drive, drive reducer, wheel-hub reduction.<\/small><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The spring-applied multi-disc drive brake is an integral assembly of the final drive transmission in Liebherr tracked and wheeled machines, serving simultaneously as a parking and service brake. The brake housing is manufactured from alloy steel 42CrMo4 (heat-treated to 28\u201334 HRC), while the friction discs are made from case-hardened 16MnCr5 steel hardened to 58\u201362 HRC, [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":10248,"parent":0,"template":"","meta":{"_acf_changed":false,"_liebherr_sku":"502038801","_liebherr_sku_all":"502038801,502037501","_oem_sku":"","_oem_sku_all":"","_oem_brand":"","_oem_sku_raw":""},"kategorie":[4119,7914,2135,2046],"class_list":["post-10250","katalog-czesci","type-katalog-czesci","status-publish","has-post-thumbnail","hentry","kategorie-undercarriage-lr632-en","kategorie-undercarriage-pr732-en","kategorie-lr632-en","kategorie-pr732-en"],"acf":[],"_links":{"self":[{"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/katalog-czesci\/10250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/katalog-czesci"}],"about":[{"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/types\/katalog-czesci"}],"author":[{"embeddable":true,"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/users\/11"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/media\/10248"}],"wp:attachment":[{"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/media?parent=10250"}],"wp:term":[{"taxonomy":"kategorie","embeddable":true,"href":"https:\/\/solids.pl\/en\/wp-json\/wp\/v2\/kategorie?post=10250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}