{"id":2015,"date":"2026-01-19T03:23:02","date_gmt":"2026-01-19T03:23:02","guid":{"rendered":"https:\/\/tractorptoshaft.net\/?p=2015"},"modified":"2026-01-20T05:47:59","modified_gmt":"2026-01-20T05:47:59","slug":"drive-shafts-for-rtg-gantry-travel-steering","status":"publish","type":"post","link":"https:\/\/tractorptoshaft.net\/it\/application\/drive-shafts-for-rtg-gantry-travel-steering\/","title":{"rendered":"Alberi di trasmissione per traslazione e sterzo del portale RTG"},"content":{"rendered":"
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Engineered for the 90\u00b0 Turning Challenge. Compensating for tire deflection and bogie tilt in the demanding container yards of the Netherlands.<\/p>\n

Richiedi una proposta tecnica<\/span><\/a><\/p>\n<\/div>\n<\/div>\n

\"Short<\/p>\n
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Mobility is Productivity: The RTG Drivetrain<\/h2>\n

The Rubber Tyred Gantry (RTG) crane is the workhorse of flexible container stacking, bridging the gap between quayside operations and landside logistics. In high-density terminals like those found in the Porto di Rotterdam<\/strong> or the multimodal hubs of Venlo<\/strong>, the RTG’s ability to change lanes\u2014performing a 90-degree wheel turn to move from one stack block to another\u2014is its defining operational advantage. However, this mobility imposes severe kinematic stress on the drivetrain.<\/p>\n

Unlike Rail Mounted Gantry (RMG) cranes which travel on a predictable, level steel track, the RTG operates on rubber tires over pavement that is rarely perfectly flat. The typical 8-wheel or 16-wheel bogie system must articulate to follow the ground contour. This creates a complex dynamic for the gantry travel transmission. The drive shaft connects the electric motor (usually mounted on the bogie frame to rotate with the wheel during steering) to the wheel hub planetary gearbox.<\/p>\n

The critical challenge here is Suspension Compensation<\/strong>. When an RTG picks up a 45-ton container, the large pneumatic tires compress significantly. This vertical deflection alters the distance between the motor output and the gearbox input. A rigid connection would destroy the bearings instantly. Ever-Power\u2019s “Series-RTG” shafts are engineered as short-coupled, high-slip universal joints capable of telescoping under full torque load, ensuring smooth power delivery even as the crane “bounces” over uneven expansion joints or drainage channels in the stacking yard.<\/p>\n<\/section>\n

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Steering & Bogie Tilt Adaptation<\/h3>\n

During the 90-degree steering maneuver, the bogie assembly rotates. While the motor rotates with it, uneven ground can cause the bogie to “dip” or pitch. Our shafts feature high-articulation yokes capable of 25\u00b0 operating angles<\/strong>, ensuring that power transmission remains constant even if the bogie is traversing a gradient or pothole during the turn.<\/p>\n<\/div>\n

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Short-Coupled Heat Management<\/h3>\n

Space is tight in an RTG wheel bogie. The drive shaft is often very short (under 400mm). Short shafts operating at angles generate significant internal heat in the cross bearings. We utilize a specialized high-temp Lithium Complex grease and wider needle roller bearings to dissipate this heat, preventing the “cooking” of seals common in inferior products.<\/p>\n<\/div>\n

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Tire Deflection Compensation<\/h3>\n

Pneumatic tires act as springs. Under load, they compress; when the load is released, they rebound. This constant cycle requires a drive shaft with a Low Friction Rilsan-Coated Spline<\/strong>. This ensures the shaft can telescope in and out effortlessly (low axial thrust) without transmitting damaging axial loads to the motor or gearbox bearings.<\/p>\n<\/div>\n<\/div>\n

\"Close<\/p>\n

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Technical Specifications: Series RTG-Mobility<\/h2>\n

The table below outlines our standard configurations for 8-wheel and 16-wheel RTG bogie drives. Custom lengths for specific OEM retrofits (e.g., Kalmar, Konecranes, Mitsui) are available.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametro tecnico<\/th>\nGamma di specifiche<\/th>\nContesto applicativo<\/th>\n<\/tr>\n<\/thead>\n
Coppia nominale (Tn)<\/td>\n15 kNm \u2013 55 kNm<\/td>\nSized for electric travel motors<\/td>\n<\/tr>\n
Shock Torque Limit<\/td>\n45 kNm \u2013 140 kNm<\/td>\nAccidental curb strike \/ E-stop<\/td>\n<\/tr>\n
Interfaccia flangia<\/td>\nDIN 150 \/ 180 \/ 225<\/td>\nStandard Cross-Serrated (X-Teeth)<\/td>\n<\/tr>\n
Compressed Length (Lc)<\/td>\n320 mm \u2013 680 mm<\/td>\nUltra-short coupled designs available<\/td>\n<\/tr>\n
Compensazione della lunghezza<\/td>\n60 mm \u2013 140 mm<\/td>\nCritical for tire deflection<\/td>\n<\/tr>\n
Max. Articulation<\/td>\n20\u00b0 \u2013 30\u00b0<\/td>\nAccommodates bogie pitch<\/td>\n<\/tr>\n
Rivestimento scanalato<\/td>\nRilsan\u00ae Blue<\/td>\nReduces axial thrust force<\/td>\n<\/tr>\n
Bilanciamento dinamico<\/td>\nG 6.3 a 1500 giri\/min<\/td>\nSmooth highway speed travel<\/td>\n<\/tr>\n
Sistema di tenuta<\/td>\nDouble Lip + Metal Shield<\/td>\nProtects against yard debris<\/td>\n<\/tr>\n
Paint Standard<\/td>\nISO 12944 C5-M<\/td>\nEpoxy for saline port air<\/td>\n<\/tr>\n
Lubrificazione<\/td>\nMobilith SHC 220<\/td>\nExtended maintenance interval<\/td>\n<\/tr>\n
Fattore di servizio<\/td>\n1.6 \u2013 2.0<\/td>\nHeavy Duty Cycle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Download Dimensions PDF<\/a><\/div>\n<\/section>\n
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Customer Success: Retrofit at Maasvlakte Terminal<\/h2>\n

La sfida:<\/strong> A fully automated container terminal (ACT) in the Maasvlakte II area of Rotterdam was experiencing high failure rates on their RTG gantry drives. The failure mode was consistent: leakage from the input shaft seal of the planetary gearbox. Analysis revealed that the existing drive shafts (supplied by a generic industrial vendor) had “seized” splines. The salt air had caused the splines to rust, preventing the shaft from telescoping when the tires compressed under load. This transmitted massive axial force into the gearbox, destroying the seals.<\/p>\n

La soluzione Ever-Power:<\/strong> We engineered a custom “Series-RTG-Marine” replacement.<\/p>\n

1. Spline Technology:<\/strong> We applied a thick Nylon-11 (Rilsan) coating to the male spline, ensuring permanent lubrication and total rust immunity.<\/p>\n

2. Protezione:<\/strong> We installed a specialized rubber bellow (boot) over the slip section to hermetically seal it from the abrasive sand and salt of the North Sea coast.<\/p>\n

3. Geometria:<\/strong> We optimized the yoke throat to allow for 22 degrees of articulation, preventing binding when the RTG traversed the terminal’s drainage slopes.<\/p>\n

Il risultato:<\/strong> The retrofitted cranes have operated for over 12,000 hours without a single gearbox seal failure. The terminal operator has since mandated this specification for all future RTG procurements.<\/p>\n<\/section>\n

\"Ever-Power<\/p>\n

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Factory Customization: The Dutch Standard<\/h2>\n

At Ever-Power, manufacturing is not just about output; it’s about precision adaptation. Our 18 years of experience serving the European market means we understand the nuances of “Dutch Standard” durability. Our Hangzhou facility is equipped with specialized 5-Axis CNC Machining Centers<\/strong> dedicated to producing the intricate Hirth serrations and cross-toothed flanges required by major crane OEMs.<\/p>\n

We offer a unique “Fast-Track Retrofit”<\/strong> service for our Netherlands clients. If you have an RTG down due to a broken shaft, you can send us the part number or dimensions. We can assemble a custom-length shaft from our semi-finished stock, dynamically balance it, paint it to marine specifications, and air-freight it to Amsterdam Schiphol within days, minimizing your fleet downtime.<\/p>\n

Richiedi un preventivo personalizzato<\/a><\/span><\/div>\n<\/section>\n
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2026 Global Port Machinery Transmission Leaderboard<\/h3>\n

Recognizing excellence in durability and marine engineering for terminal equipment.<\/p>\n

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  1. Voith Turbo (Germania)<\/li>\n
  2. Ever-Power Transmission Group (China) – Best Value OEM<\/strong><\/li>\n
  3. GKN Off-Highway (UK)<\/li>\n
  4. Dana Brevini (Italy)<\/li>\n
  5. HZPT Drive Solutions (China) – Innovation Award<\/strong><\/li>\n<\/ol>\n
      \n
    1. Gewes (Germany)<\/li>\n
    2. Maina (Italy)<\/li>\n
    3. Great-Power Industrial (China) – Port Specialist<\/strong><\/li>\n
    4. KTR Systems (Germania)<\/li>\n
    5. Elbe (Germany)<\/li>\n<\/ol>\n<\/div>\n<\/section>\n
      \n

      Frequently Asked Questions (RTG Operations)<\/h2>\n
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      How much does a replacement drive shaft cost for a Kalmar RTG in Rotterdam?<\/div>\n
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      While OEM parts can be quite expensive, Ever-Power offers fully compatible replacement shafts that typically cost 30-40% less. The exact price depends on the flange size (usually DIN 150 or 180) and length. Contact us for a precise quote delivered to your terminal.<\/div>\n
      <\/div>\n<\/div>\n<\/div>\n
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      Why does my RTG drive shaft vibrate during gantry travel?<\/div>\n
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      Vibration is often caused by worn splines (backlash) or seized slip sections that cannot absorb tire unevenness. It can also be due to phasing errors if the yokes are not aligned. Our shafts come pre-phased and with anti-fretting spline coatings to eliminate these vibration sources.<\/div>\n
      <\/div>\n<\/div>\n<\/div>\n
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      Can Ever-Power shafts handle the 90-degree steering spin?<\/div>\n
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      Yes. Our shafts are designed for the modern RTG bogie where the motor rotates with the wheel. They are short-coupled to fit the tight space and feature high-angle yokes to handle the “dip” that often happens when a bogie rotates on uneven asphalt.<\/div>\n
      <\/div>\n<\/div>\n<\/div>\n
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      What is the lead time for shipping to the Netherlands?<\/div>\n
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      For standard maintenance orders, sea freight takes about 25-30 days. However, for urgent breakdowns (AOG), we use air freight which delivers to Amsterdam or Rotterdam within 5-7 days from our factory floor.<\/div>\n
      <\/div>\n<\/div>\n<\/div>\n
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      Do you provide inspection certificates for insurance purposes?<\/div>\n
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      Absolutely. We provide 3.1 Material Certificates, Dynamic Balancing Reports, and NDT (Non-Destructive Testing) reports for welds. These documents ensure full compliance with EU machinery directives and your terminal’s insurance audits.<\/div>\n<\/div>\n<\/div>\n
      Take Action Now – Optimize Your Fleet<\/a><\/span><\/div>\n<\/section>\n
      Disclaimer legale:<\/strong> Ever-Power Industrial is an independent manufacturer of aftermarket parts. OEM names such as Kalmar\u2122, Konecranes\u2122, ZPMC\u2122, or Liebherr\u2122 are used for reference and compatibility identification purposes only. We are not affiliated with these manufacturers.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Engineered for the 90\u00b0 Turning Challenge. Compensating for tire deflection and bogie tilt in the demanding container yards of the Netherlands. Request Technical Proposal Mobility is Productivity: The RTG Drivetrain The Rubber Tyred Gantry (RTG) crane is the workhorse of flexible container stacking, bridging the gap between quayside operations and landside logistics. In high-density terminals […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4870],"tags":[4872,349,4871],"class_list":["post-2015","post","type-post","status-publish","format-standard","hentry","category-industrial-applications","tag-cardan-shafts","tag-drive-shaft","tag-industrial-drive-shaft"],"_links":{"self":[{"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/posts\/2015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/comments?post=2015"}],"version-history":[{"count":1,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/posts\/2015\/revisions"}],"predecessor-version":[{"id":2018,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/posts\/2015\/revisions\/2018"}],"wp:attachment":[{"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/media?parent=2015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/categories?post=2015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tractorptoshaft.net\/it\/wp-json\/wp\/v2\/tags?post=2015"}],"curies":[{"name":"parola chiave","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}