<\/p>\n
Swing Gearbox \u00b7 VOL140 \u00b7 14-Tonne Class<\/p>\n
Volvo EC140 Swing Gearbox<\/h2>\n
VOL140 \u00b7 VOE14540907 \/ 14541064 \u00b7 EC140 \/ EC140B \/ EC140C \/ EC140D<\/p>\n
Direct-fit replacement swing drive gearbox<\/strong> for the Volvo EC140 series. The EC140 sits at approximately 14 tonnes operating weight \u2014 the second-largest segment in Volvo’s compact-to-mid range. Mounting dimensions match VOE14540907 and 14541064 (EC140B) exactly. Confirmed by serial number before dispatch.<\/p>\n Quick Specs<\/p>\n <\/p>\n <\/p>\n A slewing gearbox<\/strong> \u2014 also known as a swing gearbox or swing reduction gearbox \u2014 is a planetary gear unit positioned between the hydraulic swing motor and the slew ring on the excavator’s upper structure. The hydraulic motor delivers high rotational speed at relatively low torque. The slewing gearbox steps that speed down at a fixed ratio and multiplies the torque proportionally, producing the slow, high-force rotation that turns the upper structure during the swing cycle.<\/p>\n The slewing gearbox’s output pinion meshes directly with the internal teeth of the slew ring on the undercarriage. This mesh is machine-specific: the output pinion tooth count and module must match the slew ring exactly. A gearbox with an incorrect output pinion \u2014 even if the external housing dimensions appear identical \u2014 will cause abnormal tooth loading, rapid ring gear wear, and potential upper structure lockup within 100\u2013200 operating hours. This is why Volvo EC140 serial number confirmation before ordering is mandatory, not optional.<\/p>\n Our slewing gearbox is compatible with the Volvo VOL140 excavator. Before purchasing, confirm the following parameters from the existing gearbox nameplate:<\/p>\n Send your EC140 serial number for written confirmation within 4 hours. Values above are reference specifications \u2014 verify from existing nameplate before ordering.<\/p>\n<\/div>\n Cross-brand refs require serial confirmation. Brand names for reference only.<\/p>\n<\/div>\n<\/div>\n <\/p>\n <\/p>\n We maintain a cross-reference database covering all EC140 generations. Send the machine serial number (first 7 characters) and we return the correct part number, dimensional drawing, and a written confirmation within 4 hours \u2014 before any purchase commitment is required.<\/p>\n<\/div>\n The EC140’s 3-stage planetary gearbox delivers substantially higher swing torque per unit volume than a 2-stage design. All three planetary stages use needle roller bearings on case-hardened pins for even load distribution and extended service life.<\/p>\n<\/div>\n Every VOL140 unit is bench-tested to full rated swing torque before shipment. Signed individual test certificate included in shipping documentation. Satisfies ISO 9001 procurement audit requirements without a separate test request.<\/p>\n<\/div>\n Emergency air freight to Canada, Australia, and Europe in 5\u20138 business days. Standard sea freight 18\u201335 days for planned orders. EXW, FOB, CFR, CIF from Jiangmen, China.<\/p>\n<\/div>\n<\/div>\n<\/div>\n <\/p>\n Follow these steps in sequence. Do not skip pre-installation inspections \u2014 they prevent the most common causes of early failure after replacement.<\/p>\n <\/p>\n The EC140 swing gearbox is mounted centrally on the revolving upper frame, directly above the slew ring. It sits between the hydraulic swing motor (mounted on top of the gearbox input flange) and the slew ring pinion gear (at the bottom of the gearbox output shaft). Access requires removing the upper frame side covers and, on many EC140 configurations, partially removing the cab step or tool storage box on the swing side. The gearbox is secured to the upper frame by 6 high-strength mounting bolts arranged in a circular bolt pattern.<\/p>\n<\/div>\n <\/p>\n Proper maintenance directly determines service life. An EC140 swing gearbox that is correctly maintained typically lasts 8,000\u201312,000 hours. The same unit neglected on oil changes commonly fails at 3,000\u20135,000 hours. These tasks take under 15 minutes per service interval.<\/p>\n <\/p>\n <\/p>\n “We maintain a fleet of 12 EC140B machines on a civil infrastructure project in Ontario. The first VOL140 swing gearbox we ordered was confirmed by serial within 4 hours, shipped by air, and arrived in 7 days. Perfect fit. We’ve since ordered 4 more. Lead time is predictable, the certificates are there every time, and the price is 40% below our previous supplier. What else do you need?”<\/p>\n “My EC140B stopped swinging on a Thursday. I emailed the part number and serial at 8am Friday. By Friday afternoon I had a confirmed match, a dimensional drawing, and a price. Air freight arrived the following Wednesday. My EC140B was back to full operation by Thursday afternoon. That is 6 working days from failure to fixed. I expected at least 3 weeks. I told my boss it was 2 weeks. He was impressed. I said nothing.”<\/p>\n <\/p>\n The vol140 swing motor inputs directly to the VOL140 gearbox via SAE flange. Order together to confirm interface compatibility. If the previous gearbox failed with internal gear damage, flush the motor case drain before installing the new gearbox.<\/p>\n Enquire \u2192<\/a><\/p>\n<\/div>\n<\/div>\n Complete input and output shaft seal kit for the EC140 swing gearbox. Ordering alongside the replacement gearbox avoids a second parts order if any seals are damaged during the removal of the original unit.<\/p>\n Enquire \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n <\/p>\n
\nVOE14540907<\/span>
\n14541064 (EC140B)<\/span>
\n100% Tested<\/span>
\nMOQ 1<\/span><\/div>\n<\/div>\n![\"\"](\"https:\/\/planetarygeardrive.top\/wp-content\/uploads\/2026\/04\/Swing-Gearbox-Fit-for-Excavator-Volvo-1-1024x1024.webp\" "\\"\\"")
<\/p>\n<\/div>\nWhat Is a Slewing Gearbox \u2014 and Its Role in an Excavator<\/h2>\n
Compatibility & Parameters \u2014 Volvo VOL140<\/h2>\n
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\n \nParameter<\/th>\n Description<\/th>\n<\/tr>\n<\/thead>\n \n Excavator Model<\/td>\n Volvo VOL140<\/td>\n<\/tr>\n \n Swing Gearbox Ratio<\/td>\n 9.0 \u2014 confirm from nameplate before ordering<\/td>\n<\/tr>\n \n Rated Torque<\/td>\n 21,000 Nm \u2014 confirm from nameplate before ordering<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n Compatible Models<\/h2>\n
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\n<\/span><\/li>\nTechnical Specifications<\/h2>\n
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\n \nParameter<\/th>\n Value \/ Details<\/th>\n<\/tr>\n<\/thead>\n \n Applicable Excavator Model<\/td>\n Volvo 140<\/td>\n<\/tr>\n \n Part Reference Numbers<\/td>\n VOE14540907 (EC140) \u00b7 14541064 (EC140B)<\/td>\n<\/tr>\n \n Machine Operating Weight<\/td>\n Approx. 13,800 \u2013 15,400 kg (varies by configuration)<\/td>\n<\/tr>\n \n Swing Gearbox Type<\/td>\n 3-Stage Planetary Reduction<\/td>\n<\/tr>\n \n Swing Gearbox Ratio<\/td>\n Confirm from existing unit nameplate (typically ~16\u201320:1)<\/td>\n<\/tr>\n \n Gear Housing Material<\/td>\n Ductile iron (steel housing available on request)<\/td>\n<\/tr>\n \n Gear Oil Grade<\/td>\n SAE 80W-90 GL-5 (unit ships without oil \u2014 fill before commissioning)<\/td>\n<\/tr>\n \n Certification & Testing<\/td>\n ISO 9001:2015 \u00b7 CE \u00b7 100% individual load test \u00b7 Signed certificate per unit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n Key Features \u2014 VOL140 Swing Gearbox Excavator Replacement<\/h2>\n
Installation Location & Method<\/h2>\n
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![\"\"](\"https:\/\/planetarygeardrive.top\/wp-content\/uploads\/2026\/04\/Excavator-Swing-Gearbox-Mounting-Location-1024x575.webp\" "\\"\\"")
<\/p>\nDaily & Periodic Maintenance Guide \u2014 EC140 Swing Gearbox<\/h2>\n
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\n \nInterval<\/th>\n Task<\/th>\n Details<\/th>\n<\/tr>\n<\/thead>\n \n Daily (pre-shift)<\/td>\n Visual inspection<\/td>\n Check for oil seepage around the input shaft seal and output shaft seal. Any visible oil on the gearbox housing surface below the seals indicates a developing seal failure. Address within the next planned maintenance window \u2014 do not defer more than 250 hours after first detection.<\/td>\n<\/tr>\n \n Daily (pre-shift)<\/td>\n Listen for abnormal noise<\/td>\n Swing the machine left and right at normal working speed with no load. A consistent low hum is normal. Grinding, clicking, or a new tonal noise that was not present previously indicates developing internal wear. Report and schedule inspection.<\/td>\n<\/tr>\n \n Every 250 hours<\/td>\n Check oil level<\/td>\n Check gear oil level at the sight glass or level plug with the machine on level ground and engine off. Oil level should be at the centre of the sight glass. An unexplained level drop of more than 100 ml between 250-hour intervals indicates a seal leak that requires investigation.<\/td>\n<\/tr>\n \n Every 250 hours<\/td>\n Inspect breather valve<\/td>\n Clean or replace the housing breather valve. A blocked breather builds internal pressure that forces oil past the shaft seals \u2014 the resulting “seal failure” is actually a blocked-breather problem. Clean with compressed air or replace if the filter element is saturated.<\/td>\n<\/tr>\n \n Every 1,000 hours<\/td>\n Gear oil change<\/td>\n Drain while warm. Inspect drain plug magnet \u2014 fine grey silt is normal; chips or flakes require investigation. Refill with SAE 80W-90 GL-5. Shorten to 500-hour intervals in high-ambient-temperature environments (>35\u00b0C) or high swing duty (>70% of operating hours in active swing).<\/td>\n<\/tr>\n \n Every 2,000 hours<\/td>\n Seal inspection<\/td>\n Inspect input and output shaft seals for hardening, cracking, or deformation. Replace proactively at 2,000-hour intervals rather than waiting for visible leakage \u2014 the labour cost of a seal replacement during a planned shutdown is significantly lower than an emergency replacement during a machine-down event.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n Frequently Asked Questions<\/h2>\n
What is the difference between VOE14540907 and 14541064?+<\/span><\/summary>\n
Can the EC140C or EC140D swing gearbox be sourced from the same supplier?+<\/span><\/summary>\n
How do I verify the output pinion mesh is correct before completing installation?+<\/span><\/summary>\n
How often should the EC140 swing gearbox oil be changed?+<\/span><\/summary>\n
What does metallic debris on the drain plug magnet mean \u2014 and when should I replace the gearbox?+<\/span><\/summary>\n
Can I use hydraulic oil instead of gear oil in the EC140 swing gearbox in an emergency?+<\/span><\/summary>\n
Verified Customer Reviews<\/h2>\n
Frequently Ordered Together<\/h2>\n
\n\ud83d\udce7 sales@planetarygeardrive.top<\/a><\/span><\/div>\n