Telescopic pneumatic cylinder. Also find product list from verified suppliers with contact number | ID: 23053942912 Jan 1, 2010 · Vatel, B. Female piston rod. These tubes progressively decrease in diameter. SHC, Inc. Every Day new 3D Models from all over the World. The telescopic extrusion allows the return stroke supply air to be directed to the front of the piston without the need for external piping. telescopic single-acting ISO. Telescopic pneumatic cylinders - 2/3 stages. We also manufacture multi stage displacement, trunnion mounted under floor telescopic cylinders that are also used as three-way tipping cylinders. Pneumatic semi-rotary drives/rotary drives from Festo enable rotary movements with a swivel angle of up to 270°. Bore, 78in. 1, 2012. A leading manufacturer of pneumatic control devices that use compressed air as a power source for automation. Pneumatic Air Filter. Click to find the best Results for telescopic pneumatic cylinder Models for your 3D Printer. The cylinders are connected with a multi-position kit. Jack Type: Other. These cylinders provide leak proof performance and have a long service life. 74in Bore 90in Stk $608. When hydraulic or pneumatic systems must produce linear motion, cylinders become their most important component by converting fluid pressure and flow to force and velocity respectively. Call to schedule your repair today! hydraulic cylinder max. Note; Diameters D and G are for nominal pin size, for actual hole size refer to print. Get contact number of verified dealers of Hydraulic And Pneumatic Telescopic Cylinders | ID: 2292038062 This paper presents the design and development of a mathematical model of dynamic motion of pneumatic telescopic cylinder. 74in. Why Choose GEYA Telescopic Pneumatic Cylinders For many years, GEYA has been at the forefront of specialized, multi-stage, small, and space-efficient air cylinders. Part of the ETH next generation line of electric thrust cylinder products, Parker’s ETH080 is suitable to replace pneumatic and hydraulic cylinders in many applications while simultaneously increasing the reliability of the production process and Cylinders Inc. Parker’s ETH080 High-Speed High-Force Screw Drive Electric Linear Actuator is a compact, heavy duty cylinder with high thrusts to 5643lbs. They are impacting different processes and operations, increasing the demand for Apr 4, 2023 · Double-acting cylinders. This cylinder type uses compressed air to work. Pneumatic cylinders. We employ innovative CNC machining and designs to ensure you receive all you need for a full-fledged pneumatic system. 0722 | propdob telescope - foldable travel dobsonian 4. 90 shipping. This cylinder is composed of two air-intake ports. Cross Tube Mounts. Our telescopic hydraulic cylinder is the ultimate solution for maximizing efficiency and productivity in your industrial operations. Custom telescoping pneumatic cylinders. Parker's Cylinder Division designs and manufactures the largest selection of actuation in North America. 2 m/s. $182. 5 mi 1919 "telescopic pneumatic cylinder" 3D Models. With no need for compressed air, electric actuators provide movements beyond the capabilities of a pneumatic actuator. Built-in safety. Dec 18, 2023 · As a pneumatic actuator, a double acting pneumatic cylinder relies on compressed air to generate bidirectional force. 00 shipping. Jan 15, 2024 · Most industries use pneumatic cylinders’ mechanism of producing force to help in different activities, such as lifting and picking objects, providing ejection and blocking, and clamping and placing objects in a particular piece of machinery during an operation. We support automation in a variety of industries. Multi stage pneumatic cylinder. The cylinders A and C operate in reverse direction ( when cylinder A is upstroke cylinder B Apr 1, 2012 · Ergo-Help's EHTC single and double-acting telescoping air cylinders in action. . ₹ 6,000 / Piece. For instance, single-acting cylinders are extremely common on dump trucks, and for a good reason. or Best Offer. With a collapsed length typically between 20-40% of the fully extended length, telescopic hydraulic cylinders are used when extension needs to be originated from a tight space. Bailey Hydraulics Maxim 7-Ton Telescopic Cylinder - 2500 PSI, 3. Get info of suppliers, manufacturers, exporters, traders of Telescopic Pneumatic Cylinder for buying in India. Actuation: Air / Pneumatic, Hydraulic. Free shipping on many items | Browse your favorite brands | affordable prices. Cylinders, Pneumatics for Automotive, Automotive - Manufacturer of industrial automation components. All sizes include a magnet in the piston and a chrome plated steel piston rod. When this happens, Prince has a staff of engineering personnel to create the special design that is required. Only 1 left in stock - order soon. Telescopic Hydraulic Cylinders Take Less Space. Pneumatics uses more energy because the air compressor needs to run continuously. We offer: -Hydraulic and pneumatic cylinders (standard NFPA, ISO, compact, telescopic and custom designs) -Helical rotary actuators and tilting couplers. Electric Cylinders. D. The design analysis carried out is focused and based mainly on identifying the characteristics of the pneumatic cylinder using force 5-Stage Telescopic Cylinders; Most telescopic hydraulic cylinders max out at six stages as stability becomes increasingly compromised with each added stage. Stroke, Model Number 210700. Telescopic cylinder is often constructed in a single-acting form, but also to be encountered in a double-acting version. P1F-T Series has various piston rod material and wiper sealing options for a wide range of applications with bore sizes Ø32 to 125mm and strokes up to 2000mm. Note that single acting cylinders will exert force in only one direction, specifically extension. Each has an outstroke and an instroke. 4mm Get Telescopic Pneumatic Cylinder, Aluminium in Vasai, Maharashtra at best price by Airfill Industries and more manufacturers with contact number | ID: 2850899682191 Pneumatic Telescopic Cylinder. 063" Pin. Telescoping hydraulic cylinders are a type of hydraulic cylinder used in applications requiring multiple stages of stroke length. The pneumatic cylinders are lightweight, and have a low-pressure capacity. Contact Supplier. IndySam January 12, 2013, 3:17pm 5 Jul 5, 2006 · The great advantage telescopic cylinders have over any other type of cylinders is their ability to provide an exceptionally long stroke from a compact initial package. Telescopic cylinders deliver versatile, flexible, and reliable results for your fleet. This allows moving a load from either or both ends and also eliminates the issues of differential piston areas inherent to standard single-rod cylinders. Unique Extrusion. Aug 17, 2021 · Typical Applications for Telescopic Hydraulic Cylinders. Product Highlights Products Telescopic Cylinders. $25. 4) are single-acting, although double-acting versions are available Jun 29, 2023 · Pneumatic Cylinders. com Oct 15, 2020 · Construction. You will not experience complications operating them. The telescopic cylinder design of GEYA allows each stage to entirely retract into the next step, resulting in the shortest retract set equivalent to its stroke. Jan 12, 2013 · As the pneumatics rules do not explicitly define what constitutes a “pneumatic cylinder,” this is a question to pose to the Q&A. You can easily use these cylinders for single or double acting, or the two can be added. 6/13. Pneumatic Telescoping Cylinder and Method. PN Telescopic Cylinders – RT Series. CYLINDERS AND ACCESSORIES CATC 26-10-11-01 For some applications, the standard cylinders may not meet all requirements. Delhi Machine & Pneumatic. A. The aim of the research is to develop a telescopic pneumatic system that can handle variable load at constant forward and retracting speed. ENG. Festo offers multi-position kits for the ADN compact air cylinders and DSBC/DSBG profile/tie rod air cylinders as well as DNC. With bores ranging from 3/4″ thru 14″ as catalog standards and larger as custom, with pressure ratings up to 250 PSI, these reliable, long-lasting cylinders bring Sheffer performance anywhere you require linear pneumatic actuators. Considering its high technological contents, this cylinder series represents without doubt the product with the highest degree of technical research and evolution accomplished by the technicians of the company. Aircon Pneumatics - Manufacturer of Solenoid Valve, Industrial Valves & Pneumatic Cylinders from Thane, Maharashtra, India May 3, 2023 · Est. 0" and 1/2" NPT Port Size with 1. We build a number of air control modules with which to operate our EHTC. Offered in both three and four stage versions, the trunnion mount features strict machining tolerances, solid stop Dec 29, 2023 · Tandem Pneumatic Cylinder. Telescopic cylinders have exceptionally long strokes. Round Telescopic Hydraulic Cylinders. Call 888-771-1894 to learn more. telescopic pneumatic cylinder on sale manufacturers, find details about telescopic pneumatic cylinder manufacturers, supplier and wholesaler - Ningbo VPC Pneumatic Co. Download multi-stage telescopic cylinder spec sheet. The collapsed length of typical telescopic cylinders varies between 20% to 40% of their extended length. 7/5 @ Stroke . For applications. . netTel: 847. Typically the collapsed length of a telescopic cylinder is 20 to 40% of the fully extended length depending on the number of stages. Our cylinders are light weight and deliver excellent performance. Telescopic cylinders ensure an excellent maximum lift together with a low closed height. 96. (The overall length is 106mm shorter than with the CG1 Series φ32 model. Telescoping cylinders are often used in applications where minimal pressure is applied. Cylinder switch mounting slots are built in to the bodies. When your telescopic cylinder, be it a hydraulic or pneumatic one, breaks down, that’s where we come to help! We’ve been repairing telescopic cylinders for 30 years and can do yours just as easily. Each stage is slightly smaller in diameter than the one before it, allowing them to fit inside one Minimum Order Quantity: 30 Unit. It is easy for you to maintain. , Pneumatic Telescopic cylinders are rarely used, not discussed more in detail in this article. You will find these cylinders with long strokes. The medical table shown below is to be operated by two double acting pneumatic cylinders ( A and B) and two telescopic pneumatic cylinders ( C and D ). Find here online price details of companies selling Telescopic Pneumatic Cylinder. Speed: 0. Frame Clamp Cylinder/Stable Clamp Force Type WRF100-X2814, -X2808. Get Contact details & address of companies manufacturing and supplying Telescoping Cylinders across India. Telescoping Fluid Actuator. In the range, we offer many standards-based cylinders Univer Group products for Pneumatic Automation: Telescopic cylinders - Univer Group: leader in Industrial Automation. Discover all CAD files of the "Telescopic hydraulic cylinders" category from Supplier-Certified Catalogs SOLIDWORKS, Inventor, Creo, CATIA, Solid Edge, autoCAD, Revit and many more CAD software but also as STEP, STL, IGES, STL, DWG, DXF and more neutral CAD formats. 4mm 0 to 1. com. Single or double-acting, short or long stroke, if your application requires maximum piston travel matched with minimal retracted cylinder length, we are undoubtedly your go-to Design a Pneumatic Operated Medical Bed. Bore sizes up to 100mm; stroke lengths up to 100mm. Piston rod cylinders. A combination of single-acting stages with a double-acting stage is also possible. 2 = 2 stages 0 = D. $65. There are several situations in which a telescopic hydraulic cylinder is the right tool for the job. Examples of items a custom telescopic cylinder may require: • Extra short retracted length. This allows for a much longer stroke length than a single Dec 4, 2018 · 3. Discover all CAD files of the "Telescopic pneumatic cylinders" category from Supplier-Certified Catalogs SOLIDWORKS, Inventor, Creo, CATIA, Solid Edge, autoCAD, Revit and many more CAD software but also as STEP, STL, IGES, STL, DWG, DXF and more neutral CAD formats. Aarav Trading Company. G Dia. Telescopic Cylinder. At the same time, hydraulics consumes less because they can recycle the fluids or liquids used through a filtration system. = Double acting. Two bidirectional cylinders with inlet and outlet ports are arranged inline. We are into manufacturing of Double Acting, Single Acting, and Welded Type, Heavy duty, Mill duty & Telescopic type hydraulic & pneumatic cylinders as per ISO Standard. It is rated for pressures to 125 psi with 3/4, 1 1/2, and 2 1/2 in. 59"/1. Cylinder Division offers a full range of standard NFPA hydraulic and pneumatic cylinders, mobile, compact and telescopic cylinders, helical rotary actuators, tilting couplers and custom cylinders, for customer design flexibility to meet or A telescopic cylinder, also known as a multi-stage cylinder or telescoping cylinder, is a type of hydraulic or pneumatic actuator that consists of multiple nested cylindrical stages or sleeves that extend and retract in a telescopic manner. Telescopic Hydraulic Cylinders. Get Price Quote. Get the best deals on Telescopic Cylinder Hydraulic & Pneumatic Cylinders when you shop the largest online selection at eBay. Also find Telescopic Pneumatic Cylinder price list from verified suppliers with contact number | ID: 2603553562 Your Innovative Pneumatic Manufacturer. Single-acting and double-acting telescoping cylinders are also referred to as telescopic cylinders. Completely Pneumatic Telescopic cylinders are double acting and require no springs or external force to return the piston rod to the home position. 200 bar. L. The test pressure is slated at 300 bar with the maximum working speed is at 0. The smaller, 2nd stage cylinder travels about 3 times faster than the larger 1st stage cylinder. is Telescopic Pneumatic Cylinder factory. Energy Consumption. Download this article in . 9-stage, telescoping air cylinder design. For all your Industrial Automation needs such as Multi stage pneumatic cylinder. Telescopic Pneumatic Cylinders 2. HCI Has the Right Telescopic Cylinder Replacements for Your Fleet. Trunnion Mounts. p. Lift Capacity: 10 to 50 tons. Air pressure is used by double-acting cylinders (DAC) to retract strokes and change range. Specialty actuators. As a result, our pneumatic drives are used in factory automation across a wide Telescopic Pneumatic Cylinder - Buy Telescopic Pneumatic Cylinder at best price of Rs 10000/piece by Ardee Hi Tech Private Limited. Designed for heavy-duty intensive commercial use. China Telescopic Pneumatic Cylinder manufacturers - Select 2023 high quality Telescopic Pneumatic Cylinder products in best price from certified Chinese Pneumatic Wheel, Normal Cylinder suppliers, wholesalers and factory on Made-in-China. Since the two cylinders need electrical power to get energized, they have a different level of consumption. Brass Tn Series Pneumatic Cylinder, Size: 1/2 inch. Our cylinders are widely used in the automobile industry due to light weight and low maintenance cost. Telescoping Fluid Actuator HI TECH SOLUTIONS. It is comprised of several cylinders built inside one another. has been manufacturing our own line of Telescopic cylinders for over 25 years! Our cylinders are 100% American made with the entire cylinder and its components manufactured here in our shop in Athens, TN. These high quality cylinders are constructed with hard anodized extruded aluminum bodies and end caps. 4) Increasing the stroke, increase time to start from the extended position to get back Telescopic cylinders are a special design of a hydraulic or pneumatic cylinder which provides an exceptionally long output travel from a very compact retracted length. #1. - Pneumatic automation/Automotive. Single and double-acting. 2) Load has to be guided with external guide because it cannot accept radial load. Available in 1,500 to 3,000 psi pressure and in various configurations. 5 DPL series cylinders. 15 watching. Telescopic cylinders are double acting and require no springs or external force to return the piston rod to the home position. Get Telescopic Pneumatic Cylinders in Auto Nagar, Visakhapatnam, Andhra Pradesh at best price by Simhavalli Hydraulic. Telescopic cylinders are used when an application requires a compact retracted dimension, but needs a longer stroke. It works just like a telescope does. Shop well-known brand names like Bailey Hydraulics and Nortrac for all your 3772915167. Distributor and custom manufacturer of hydraulic tie-rod, mill grade, air, single and double acting telescopic, multi-stage and welded cylinders. ergo-help. 3) Movement of the stages has a predetermined sequence only for the getting in stroke. UNIVER s. Common mounting options for telescopic cylinders are trunnion and cross-tube. Stroke : 390 mm - 2,780 mm. 1) Telescopic cylinder has been developed to push because the pulling force is very low. [1]Some pneumatic telescoping units are Ergo-Help Pneumatics - 3-Stage Telescoping, Double-Acting Pneumatic Cylinder. 2 Jan 20, 2024 · 5. Bailey Hydraulics Maxim 7-ton Telescopic Cylinder 2500 PSI 3. Crafted with precision and engineered for performance, this hydraulic cylinder is designed to meet the demands of heavy-duty applications. (with non-rotating piston rod and elastic shock absorber seals) = Stainless steel piston rod = Chromium-plated steel piston rod. We build in two mounting styles, several bore sizes and in varying strokes. We’ve outlined a few of them below. We manufacture the best quality pneumatic components, air source processors, and pneumatic and hydraulic cylinders for various professional and industrial applications. Cylinder Division offers a full range of standard NFPA hydraulic and pneumatic cylinders, mobile, compact and telescopic cylinders, helical rotary actuators, tilting couplers and custom cylinders, for customer design flexibility to meet or exceed their application requirements in uptime Ideal air hydraulic jack for low buses and other low clearance vehicles. At Festo, the range of pneumatic cylinder drives includes piston rod cylinders and rodless cylinders (linear drive), swivel cylinders, tandem, multi-position and stopper cylinders as well as clamping and tensioning cylinders, drives with linear guidance, and bellows and diaphragm cylinders. Double-rod cylinders have a piston rod that extends from both ends of the cylinder. 95 New TEMCo HC0029 Telescoping Hydraulic Cylinder Tons 49. We have manual diretional valves. The item has a cylinder that conforms to the requirements of ISO 6020/2 and can work to a maximum working pressure of 200 bar. ₹ 6,000/ Piece Get Latest Price. effective bore sizes Find here Telescoping Cylinders manufacturers & OEM manufacturers in India. Telescopic Pneumatic Cylinders. ₹ 600 / Piece. Order Multi stage pneumatic cylinder online now from Festo! Parker’s Cylinder and Accumulator Division designs and manufactures the largest selection of actuators and accumulators in North America. 5 Tags Astronomical telescope Propdob Dobsonian - 4. ) Applications: For an energy-saving lifter Specifications: Bore size φ20 32 Stroke 125mm 125mm Stroke tolerance 0 to 1. Telescopic cylinders have a series of segmented tubes that extend when compressed air fills the cylinder. Parker Single Acting Telescopic Hydraulic Cylinders provide extremely long cycle life and are field-repairable. Get a long stroke from a compact package that fits practically anywhere by choosing a telescopic hydraulic cylinder. The container must be tilted to somewhere between 45 and 60 degrees to empty a dump truck. We're trying to have the extend time be about 10 seconds so the speed of the smaller, 2nd stage cylinder isn't so fast. ADNM. -Accumulators (piston, bladder and diaphragm designs Telescopic pneumatic cylinders - 2/3 stages. Completely Pneumatic. Whether as round cylinder, profile cylinder, compact cylinder, short-stroke cylinder, flat cylinder, miniature cylinder, screw-in or stainless-steel cylinder: depending on the piston diameter, thrust forces of up to 50 kN at 6 bar are possible. Mar 6, 2020 · Synchronizing Pneumatic Telescopic Cylinders. Mobile Cylinder Division Youngstown, OH Stock Double-Acting Telescopic Cylinders Non-Trunnion Mount Designs A Stroke B Closed C Open E H "C" or "D" Type Mount ""B or "C" Type Mount N P R S "Retract Port" O "Extend Port" Q "Extend Port" D Dia. These cylinders are generally single acting and are available in two to five stages. ***NOTE - The H46 has 3",2 1/4" Bores NOT 3 1/2", 2 1/4" as in the table*** Multi-Stage Displacement Cylinders. US005341724A(Patent). Double-acting compact air cylinders. Parker telescopic cylinders are 2,000 PSI rated and support application specific requirements (stroke lengths, closed lengths, and mountings). Unleash the Power of Efficiency with our Telescopic Hydraulic Cylinder. One of the main benefits is the fact that these cylinders can be used effectively in small, compact spaces. Both single acting and double acting cylinders are available in Telescopic type but widely used in hydraulic applications in high load handling. You can use it in constant-speed or force applications. Electric actuators from SMC are designed with a focus on easy setup and operation. The advantage of telescopic cylinders is that they can generate Telescoping cylinders also known as telescopic cylinders, these pneumatic cylinders are available in both double and single acting. How to use telescopic pneumatic cylinder? The telescopic pneumatic cylinder is easy to Our signature product today is our EHTC Telescoping Pneumatic Cylinder line, which has the distinction of incorporating up to eight stages into a nested cylinder design. Our trunnion mount cylinders not only offer a mounting style allowing for increased capacity in the dump body through a significant reduction or elimination of the dog house, but also many other features. Achieve Hydraulics & Pneumatics is one of the leading manufacturers of Hydraulic cylinders. Interlocking sections contract and expand as necessary to generate up to 2500 PSI wherever the force is needed. China leading provider of Telescopic Hydraulic Cylinder and Telescopic Pneumatic Cylinder, Anhui Suzhou RHYP Telescopic Cylinder Products Co. • Special end fittings. 0 Pneumatic Telescopic Cylinder ₹ 15,000/ Unit Get Latest Price Owing to the rich industrial experience and expertise in this business, we are engaged in providing Pneumatic Telescopic Cylinder. The collapsed length of a telescopic cylinder can be 20 to 40% of the fully extended length, depending on the number of stages. These Telescopic Hydraulic Cylinder are widely used in the automobile industry across the country. Key features, including high precision positioning and repeatability characterize the SMC series of electric cylinder products. Cylinder D moves the table horizontally back and forth. 2 m/second. provides a 1 year warranty on the seals we replace and the work we perform. ISO 15552 Pneumatic Cylinders, Tie-Rod Design - P1F-T Series P1F-T Series ISO 15552 tie-rod pneumatic cylinders are suitable for low to high temperatures. They include a piston rod which, when activated, ‘telescopes’ as a segmented piston, providing an extended reach. Also find product list from verified suppliers with contact number | ID: 21697575488 Jun 5, 2006 · Double-acting, 2-stage telescoping cylinder requires less space than other cylinders. We have attained immense appreciation owning to our Telescopic Hydraulic Cylinder which are used for various stages of required stroke length. 969” (50 mm) Rod Diameter, 3500 Max PSI, Retracted Length: 45. ・Select from 2 clamping positions. Most telescopic cylinders (Fig. The tube with the smallest diameter is referred to as the piston rod. Maxim 7 Ton Single-Acting Telescopic Hydraulic Cylinder, 3 Stage, 78 Stroke. Please visit our Air Control Module page for some options. Sep 15, 2023 · Discover the Best Pneumatic Cylinder Brands of 2023 - These top manufacturers offer superior performance and reliability for a variety of industrial applications Trunnion Mount Cylinders. Aircon Pneumatics - Offering Telescopic Pneumatic Cylinder, Telescopic Pneumatic Cylinder at Rs 30000/unit in Thane, Maharashtra. Thus, when mounting space is limited, and the application needs a long Aug 30, 2022 · Just like other types of cylinders, there are benefits to using telescopic hydraulic cylinders. During operation, the air enters both chambers simultaneously, pushing the pistons and causing the piston rod to extend, retract, or both. 1972. a. Continue shopping Go to cart. A telescopic cylinder is a specially designed hydraulic cylinder or pneumatic cylinder with an air rams pulley system that provides an exceptionally long output length from a very compact retracted length. Enerpac CH604 / CH-604 High Flow Coupler Male Half Dust Cap Hydraulic Cylinder. US2007/0074964A1 (Patent) Jan 2007; G L Miller; Miller,G. Festo piston rod cylinders are pneumatic drives for executing linear movements. , Ltd. Custom Hoists® double-acting telescopic cylinders are manufactured to individual specifications to meet the rigid requirements of today's applications, including Refuse Trucks and Solid Waste Packers, Stationary and Mobile Trash Compactors, Transfer and Push-Out Trailers, Roll-Off Units, Construction Equipment and more. A staff report. Whether extending or retracting, pneumatic cylinders convert energy found in compressed air into linear motion. 00. If your operations are confined and require compact Skip to main content Telescope Cylinder CG1BN32－250－DCH339BH Features: The overall length is “Stroke + 7mm” due to its telescopic structure. 10-49 Employees. Techno Pneumatic Cylinder - Buy Telescopic Pneumatic Cylinder at best price of Rs 250/piece by Nisha Sales. Jan 1, 2012 · Engineering Essentials: Cylinders. Other types of pneumatic cylinders include aluminum pneumatic cylinders, and stainless steel pneumatic cylinders because they are more lightweight, and have a low-pressure capacity. $548. 2 or 3 Stages Mar 27, 2015 · While pneumatic telescopic cylinders exist, hydraulic power is much more common, especially when heavy loads are being moved. For more info, please visit us: http://www. PDF format. Jan. 3 = 3 stages 3 = D. Both rotary vane drives and rack-and pinion drives typically achieve maximum precision while also offering excellent performance and great versatility. 316 or 304 stainless steel, aluminum, bronze, carbon steel, brass and ductile iron materials used. Pneumatic Telescopic Cylinders are offered to the clients in light, medium and heavy duty models. Added to your cart. Male piston rod. 593. These cylinders don’t rely on the traditional piston rod to extend and retract, but instead use several arms that slide in and out of the cylinder housing. We provide technology to various fields such as automobiles, IT, and medicine. Brand New. 1994. Tusker Hydraulics 7 Ton Single Acting Three Stage Telescopic Cylinder: 108” Stroke - 1. Such as heavy cranes, dumpers, etc. au tf ny fj uj en mi pj cf ck