{"id":8757,"date":"2026-10-29T03:15:19","date_gmt":"2026-10-29T03:15:19","guid":{"rendered":"https:\/\/www.compressorpartsmall.com\/?post_type=product&p=8757"},"modified":"2026-10-29T03:51:58","modified_gmt":"2026-10-29T03:51:58","slug":"atlas-copco-zr-50-vsd-ff-oil-free-rotary-tooth-air-compressor","status":"publish","type":"product","link":"https:\/\/www.compressorpartsmall.com\/es\/product\/atlas-copco-zr-50-vsd-ff-oil-free-rotary-tooth-air-compressor\/","title":{"rendered":"Atlas Copco ZR 50 VSD+ (FF) Oil-Free Rotary Tooth Air Compressor"},"content":{"rendered":"

The Atlas Copco ZR 50 VSD+ is the water-cooled topper of the ZR\/ZT 30-50 VSD+ range, rated at 50 kW \/ 67 hp and built around the oil-free rotary tooth element. Two NEOS Next frequency converters work with two IE5 permanent magnet motors, one per compression stage. The ZR 50 VSD+ follows the plant demand between 28 and 100 percent of capacity. The compression chambers run without any lubrication, and the range carries the ISO 8573-1 CLASS 0 certification verified by T\u00dcV.<\/p>\n

Two pressure versions cover the working field: an 8.6 bar(e) build and a 10 bar(e) build. Free air delivery reaches 147.7 l\/s at the minimum pressure point of both versions. The water-cooled circuit carries the heat of compression out of the frame instead of into the room air. The sections below walk through the position of the ZR 50 VSD+ in the range, the rated data at every working point, and the way the drive train, the dryer builds and the cooling concept behave in daily operation.<\/p>\n

Where the ZR 50 VSD+ Sits in the Oil-Free Range<\/h2>\n

The ZR\/ZT 30-50 VSD+ range steps through 30, 37, 45 and 50 kW. The ZR 50 VSD+ holds the top step with the largest flow of the group. The range belongs to the oil-free rotary tooth family that Atlas Copco has built for more than four decades. It sits below the ZR 55 VSD<\/a> of the ZR\/ZT 37-55 VSD group in the wider line-up.<\/p>\n

Every machine in the 30-50 VSD+ range shares the same drive concept, the same element technology and the same Full Feature logic. A plant that installs the ZR 50 VSD+ today and adds a second size tomorrow keeps one service concept across the room. The spare parts logic stays uniform as well. That is a quiet but real advantage when the compressor room grows step by step.<\/p>\n

Velocidad fija o velocidad variable<\/h3>\n

Atlas Copco also sells the 30 to 45 kW tooth machines as fixed-speed units. The 37-55 VSD group above carries the standard VSD generation. The ZR\/ZT 30-50 VSD+ range is the premium step of the tooth family, with dual NEOS Next drives, IE5 permanent magnet motors and a turn-down window from 28 to 100 percent. No fixed-speed machine can match that window.<\/p>\n

For a demand profile that moves between shifts, the ZR 50 VSD+ converts that movement directly into energy savings of up to 35 percent compared with a fixed-speed machine. The net pressure stays stable within 0.1 bar while the flow follows the plant. The ZR 50 VSD+ never wastes energy on unloaded running inside its turn-down window. That is where the payback of the VSD+ concept comes from.<\/p>\n

\"Atlas
Atlas Copco ZR 50 VSD\u207a (1)<\/figcaption><\/figure>\n

Technical Specifications of the ZR 50 VSD+<\/h2>\n

The rated data below follows the official ZR\/ZT 30-50 VSD+ documentation. Unit performance is measured in accordance with ISO 1217, Annex C, 4th edition (2009). The reference conditions are 0 percent relative humidity, 1 bar absolute inlet pressure and 20\u00b0C inlet temperature. The noise value is the A-weighted emitted sound pressure level at the workstation, measured in accordance with ISO 2151:2004 using ISO 9614\/2.<\/p>\n

Rated Data at 8.6 Bar(e)<\/h3>\n

The 8.6 bar version of the ZR 50 VSD+ covers three working points, and the free air delivery band moves with the working pressure as the table shows.<\/p>\n\n\n\n\n\n\n
Punto de trabajo<\/th>\nPresi\u00f3n de trabajo (bar(e))<\/th>\nFAD l\/s<\/th>\nFAD m\u00b3\/min<\/th>\n<\/tr>\n
M\u00ednimo<\/td>\n4<\/td>\n37.5 \u2013 147.7<\/td>\n2.2 \u2013 8.8<\/td>\n<\/tr>\n
Vigente<\/td>\n7<\/td>\n36.9 \u2013 146.1<\/td>\n2.2 \u2013 8.7<\/td>\n<\/tr>\n
M\u00e1ximo<\/td>\n8.6<\/td>\n36.8 \u2013 143.5<\/td>\n2.2 \u2013 8.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The motor rating stands at 50 kW and the noise level stands at 69 dB(A) for the 8.6 bar version. In imperial units the same three working points read as follows.<\/p>\n\n\n\n\n\n\n
Punto de trabajo<\/th>\nPresi\u00f3n de trabajo (psig)<\/th>\nFAD l\/s<\/th>\nFAD cfm<\/th>\n<\/tr>\n
M\u00ednimo<\/td>\n58<\/td>\n37.5 \u2013 147.7<\/td>\n79.6 \u2013 312.9<\/td>\n<\/tr>\n
Vigente<\/td>\n102<\/td>\n36.9 \u2013 146.1<\/td>\n78.2 \u2013 309.5<\/td>\n<\/tr>\n
M\u00e1ximo<\/td>\n125<\/td>\n36.8 \u2013 143.5<\/td>\n77.9 \u2013 304.07<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The imperial table rates the motor at 67 hp. The flow band shows the character of the VSD+ control. The ZR 50 VSD+ keeps more than 36 l\/s even at its floor. A line with a light night shift still receives real oil-free air without unload running.<\/p>\n

Rated Data at 10 Bar(e)<\/h3>\n

The 10 bar version keeps the same 50 kW motor rating and the same 69 dB(A) noise level. The ZR 50 VSD+ therefore serves higher-pressure processes without changing the frame or the drive concept.<\/p>\n\n\n\n\n\n\n
Punto de trabajo<\/th>\nPresi\u00f3n de trabajo (bar(e))<\/th>\nFAD l\/s<\/th>\nFAD m\u00b3\/min<\/th>\n<\/tr>\n
M\u00ednimo<\/td>\n4<\/td>\n37.5 \u2013 147.7<\/td>\n2.25 \u2013 8.8<\/td>\n<\/tr>\n
Vigente<\/td>\n9<\/td>\n36.4 \u2013 139.5<\/td>\n2.1 \u2013 8.3<\/td>\n<\/tr>\n
M\u00e1ximo<\/td>\n10<\/td>\n35.8 \u2013 129.3<\/td>\n2.1 \u2013 7.7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The imperial table for the 10 bar build reads 58, 130 and 145 psig across the three working points. Free air delivery runs from 79.6 to 312.9 cfm at the minimum point, 77.2 to 295.6 cfm at the effective point and 75.9 to 274.09 cfm at the maximum point, with the motor rated at 67 hp. Plants that run instruments or petrochemical processes at higher pressure select the 10 bar ZR 50 VSD+ for exactly this reason.<\/p>\n

Dimensiones y peso<\/h3>\n\n\n\n\n\n
TYPE<\/th>\nLongitud<\/th>\nAncho<\/th>\nAltura<\/th>\n<\/tr>\n
ZR\/ZT 30-50 VSD+ (Pack)<\/td>\n2005 mm \/ 79 in<\/td>\n1022 mm \/ 40 in<\/td>\n1909 mm \/ 75 in<\/td>\n<\/tr>\n
ZR\/ZT 30-50 VSD+ (FF)<\/td>\n2440 mm \/ 88 in<\/td>\n1022 mm \/ 40 in<\/td>\n1909 mm \/ 75 in<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n
TYPE<\/th>\nPack<\/th>\nFull Feature (iMD)<\/th>\nFull Feature (iD)<\/th>\n<\/tr>\n
ZR\/ZT 30 VSD+<\/td>\n1350 kg \/ 2976 lb<\/td>\n1610 kg \/ 3549 lb<\/td>\n1504 kg \/ 3316 lb<\/td>\n<\/tr>\n
ZR\/ZT 37\/45\/50 VSD+<\/td>\n1373 kg \/ 3027 lb<\/td>\n1646 kg \/ 3629 lb<\/td>\n1531 kg \/ 3375 lb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The ZR 50 VSD+ shares the weight row of the 37 to 50 kW machines. The Pack build weighs 1373 kg and the Full Feature build with the iMD drum dryer weighs 1646 kg. The integrated dryer adds 435 mm of length to the frame. The width and the height stay unchanged, so the ZR 50 VSD+ keeps one footprint along the room wall in every build.<\/p>\n

VSD+ with Dual NEOS Drives<\/h2>\n

The defining hardware of the ZR 50 VSD+ is the pair of NEOS Next frequency converters. The main converter drives the compression motor and an auxiliary converter drives the cooling fan and the dryer. Every rotating part therefore receives exactly the speed the operating point asks for. Both converters carry an IP54 protection grade and stay stable up to 50\u00b0C ambient temperature without derating.<\/p>\n

The Drive Hardware Behind the ZR 50 VSD+<\/h3>\n

Two IE5 ultra-premium permanent magnet motors are direct coupled to the low-pressure and the high-pressure element, each with its own converter. The motors are oil cooled with an IP66 protection grade. The oil cooling shields the magnets from the environment and keeps the windings at a controlled temperature. This design has proven itself across other Atlas Copco ranges.<\/p>\n

Because each stage of the ZR 50 VSD+ has its own drive, the intercooler pressure is optimized for the complete speed range. The load distribution between the two stages stays at its optimum at every running condition. A single-drive machine reaches its best efficiency only at one design point. The ZR 50 VSD+ holds its efficiency across the whole turn-down window instead.<\/p>\n

\"Atlas
Atlas Copco ZR 50 VSD\u207a (2)<\/figcaption><\/figure>\n

Two-Stage Oil-Free Tooth Element and Class 0 Air<\/h2>\n

The oil-free tooth element compresses in two stages with stainless steel rotors that carry a superior coating on their active surfaces. Atlas Copco lists it as the most efficient element in this power range of oil-free compressors. The straight-rotor layout with opposing axial inlet and outlet keeps the axial loads on the main components low. The unique Z seal design separates the compression chamber from the outside and guarantees the certified oil-free air quality of the ZR 50 VSD+.<\/p>\n

The Air and Oil Paths<\/h3>\n

Air enters the ZR 50 VSD+ through the inlet filter and passes the blow-off valve that handles the load and unload regulation. The first stage raises the pressure to an intermediate level. The intercooler cools the air and a moisture separation system drains the condensate. The second stage brings the flow to the final pressure.<\/p>\n

A pulsation damper with an integrated check valve feeds the aftercooler. The air cools down and the remaining moisture is separated before the flow leaves through the outlet connection flange. The oil circuit runs completely apart from the air path. An oil pump pushes oil through the oil cooler and the high efficiency filter to the bearings and the gears, and the oil never comes into contact with the compressed air.<\/p>\n

T\u00dcV verified the result against ISO 8573-1 CLASS 0, the strictest class of the standard. That certificate is why the ZR 50 VSD+ serves food and beverage, pharmaceutical, electronics and medical applications without downstream oil risk. The plant audit receives the paperwork in one page. The production process receives the air quality it was designed around.<\/p>\n

\"Atlas
Atlas Copco ZR 50 VSD\u207a (3)<\/figcaption><\/figure>\n

Water-Cooled Thermal Design<\/h2>\n

Water cooling defines the ZR side of the range. The heat of compression leaves the ZR 50 VSD+ through the closed water circuit instead of being blown into the room. The machine therefore suits plants with warm engine rooms, limited ventilation or a cooling network that already exists for other process equipment. No additional ventilation capacity has to be installed for the compressor room.<\/p>\n

The recovered heat can serve washing processes, space heating or an upstream heating system. The ZR 50 VSD+ turns part of the compression energy back into a usable utility this way. The water-cooled build also keeps the sound level at 69 dB(A). No fan has to move the full cooling air across the cooler battery, which is one reason the water-cooled side runs quieter than its air-cooled sibling.<\/p>\n

Standard and Full Feature: What the Builds Add<\/h2>\n

The Pack build is the ZR 50 VSD+ in its base scope. The complete VSD+ package ships with the soundproof canopy and the Elektronikon controller, without an integrated dryer. The Full Feature builds integrate the air treatment into the same frame. The Full Feature with the iD refrigerant dryer dries the air to a pressure dew point suitable for general plant air, and the Full Feature with the iMD rotary drum dryer reaches negative pressure dew points because the drum regenerates with hot compressed air instead of external energy.<\/p>\n

What the Dryer Choice Changes<\/h3>\n

The dryer choice changes the weight and the length of the ZR 50 VSD+. The Pack build weighs 1373 kg and measures 2005 mm in length. The iD build weighs 1531 kg, and the iMD build weighs 1646 kg and stretches the frame to 2440 mm. All three builds keep the same width and height, so the dryer decision costs floor space along one axis only.<\/p>\n

For moisture-sensitive applications such as paint shops or pharmaceutical coating, the iMD build of the ZR 50 VSD+ with the optional MD heater pushes the pressure dew point deeper. The optional silicone-free rotor matches the strictest application requirements. The integrated layout removes the freestanding dryer and its piping. The air path between compression and drying becomes shorter and cleaner at the same time.<\/p>\n

\"Atlas
Atlas Copco ZR 50 VSD\u207a (4)<\/figcaption><\/figure>\n

Options for Specific Applications<\/h2>\n

Atlas Copco lists a dedicated option set for the range. The integrated refrigerant dryer and the integrated MD dryer cover the air quality side. The MD heater deepens the dew point. The high ambient variant keeps the ZR 50 VSD+ running round the clock at 50\u00b0C ambient with no derating of the frequency drive.<\/p>\n

Further options include anchor pads, ANSI flanges, a flanged inlet, a main power isolator switch, anti-condensation heaters, a water shut-off valve, a fast acting fuse, an IT variant for IEC networks, a test certificate and energy recovery. Availability depends on the chosen configuration. The customization team tailors ZR 50 VSD+ units beyond the standard list where a process demands it. Most plants find their configuration inside the catalogue options.<\/p>\n

Control, Monitoring and Service<\/h2>\n

The Elektronikon controller runs the ZR 50 VSD+ from a touch screen with embedded control algorithms for efficiency and reliability. SMARTLINK connects the compressor room to customized energy reports and early warnings. Component replacement is scheduled before a fault stops production. The online monitoring keeps the service organization ahead of the demand curve.<\/p>\n

The Total Responsibility Plan covers preventive maintenance, breakdown risk reduction and complete overhauls when the hours pile up. Because the 30-50 VSD+ range shares its hardware across the four sizes, the service concept and the maintenance intervals stay uniform. Every ZR 50 VSD+ uses the same spare parts logic as the 30, 37 and 45 kW machines around it. A plant that grows inside the range never has to relearn its maintenance routine.<\/p>\n

\"Atlas
Atlas Copco ZR 50 VSD\u207a (5)<\/figcaption><\/figure>\n

Preguntas frecuentes<\/h2>\n

How much air does the ZR 50 VSD+ deliver at full load?<\/h3>\n

The 8.6 bar version delivers 36.8 to 143.5 l\/s between its floor and the maximum working point at 8.6 bar(e), and it reaches 147.7 l\/s at the 4 bar(e) minimum point. The 10 bar version delivers 35.8 to 129.3 l\/s across its band. In imperial units the flow peaks at 312.9 cfm at the minimum point of both versions.<\/p>\n

Is the ZR 50 VSD+ available in more than one pressure version?<\/h3>\n

Yes. The range documentation lists an 8.6 bar build and a 10 bar build, both rated at 50 kW \/ 67 hp with the same 69 dB(A) noise level. Both versions share the same frame, the same drive hardware and the same Full Feature options, so the pressure choice changes the rated flow figures but not the installation plan.<\/p>\n

How much does the ZR 50 VSD+ weigh?<\/h3>\n

The Pack build weighs 1373 kg (3027 lb), the Full Feature with the iD refrigerant dryer weighs 1531 kg (3375 lb), and the Full Feature with the iMD drum dryer weighs 1646 kg (3629 lb). The values follow the official weight table of the range, which lists one shared row for the 37 to 50 kW machines.<\/p>\n

How quiet is the ZR 50 VSD+?<\/h3>\n

The sound pressure level at the workstation is 69 dB(A) for both pressure versions, measured in accordance with ISO 2151:2004 using ISO 9614\/2. The soundproof canopy allows installation directly in the working area without a separate compressor room.<\/p>\n

What does Full Feature add to the ZR 50 VSD+?<\/h3>\n

Full Feature integrates the air treatment into the frame. The iD build adds the refrigerant dryer for a stable pressure dew point on general plant air, and the iMD build adds the rotary drum dryer that regenerates with hot compressed air and reaches negative pressure dew points. The integrated layout removes the freestanding dryer and its piping, saves floor space and shortens the air path between compression and drying.<\/p>\n

Why does the ZR 50 VSD+ use water cooling?<\/h3>\n

The water circuit carries the heat of compression out of the frame instead of into the room air. Plants with warm engine rooms, limited ventilation or an existing cooling network install the ZR 50 VSD+ without extending their ventilation capacity, and the recovered heat serves washing processes, space heating or other utilities on site. The air-cooled equivalent of the range is the ZT 50 VSD+.<\/p>","protected":false},"excerpt":{"rendered":"

The Atlas Copco ZR 50 VSD+ is the water-cooled oil-free rotary tooth compressor rated at 50 kW \/ 67 hp, with dual NEOS Next drives and two IE5 permanent magnet motors that keep output between 28 and 100 percent of capacity. Two pressure versions at 8.6 and 10 bar(e) deliver up to 147.7 l\/s, and the package carries the ISO 8573-1 CLASS 0 certification. Not sure which version fits? Send us the model and your working pressure in bar, and Seadweer confirms the right build \u2014 standard or Full Feature \u2014 with the quotation in one pass.<\/p>","protected":false},"featured_media":8749,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[3692],"product_cat":[3749],"product_tag":[3751],"class_list":["post-8757","product","type-product","status-publish","has-post-thumbnail","product_brand-atlas-copco","product_cat-oil-free","product_tag-oil-free-air-compressors","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/product\/8757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/comments?post=8757"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/media\/8749"}],"wp:attachment":[{"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/media?parent=8757"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/product_brand?post=8757"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/product_cat?post=8757"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.compressorpartsmall.com\/es\/wp-json\/wp\/v2\/product_tag?post=8757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}