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DX Engineering Towers
DX Engineering TB300 Advanced Design Thrust Bearings
DX Engineering TB300 Advanced Design Thrust Bearings offer a major advance in mechanics that solve the issues with competing tower mast bearings that wear out too quickly They are specifically designed for a vertically mounted 1.5 to 2.0 inch OD tower mast installed for the efficient rotation of directional HF, VHF, UHF and SHF antennas. Introduced in early 2021, the upgraded DX Engineering TB300 features high quality stainless steel ball bearings and stainless steel races that keep the bearings very clean. Compared with ANY OTHER thrust bearings, our TB300 thrust bearings are firm and strong with an ultra-low rotation resistance that has to be seen to be believed. These heavy-duty bearing assemblies are cast from high-strength zinc-aluminum alloy, precision machined and assembled to last for the life of the tower installation. DX Engineering Thrust Bearings are 7 in. diameter overall and mate with tower bearing plates and accessory plates for ROHN or Amerite towers. DX Engineering TB300 thrust bearings mount directly to: -DXE-AS455G DX Engineering Accessory Shelf for inside of ROHN 45G and 55G and Amerite 45 & 55 -Pre-drilled "Flat-Top" Tower Section models ROHN 25AG4 ROHN 45AG4 -Top Bearing Plate models ROHN BPL25G on top of a straight 25G tower section ROHN BPL45G on top of a straight 45G tower section ROHN BPL55G on top of a straight 55G tower section -Tower Top Bearing Plate with Accessory Shelf ROHN BAS25G for top of a straight 25G Tower Sections (may be used on the top of combination model). They may also be used on any Amerite Tower and accessory that corresponds to the ROHN part numbers listed above, including tower-top bearing shelves for AME-25, 45 and 55 series towers. NOTE: Accessory Shelf models that fit inside of ROHN or Amerite 25G do not accommodate DX Engineering Thrust Bearings. These bearings are intended only for top mount on flat top 25G tower. The DXE-TB300 Thrust Bearing, for up to 2 in. OD mast, is supplied complete with hardware. The three stainless steel mast capturing and centering hex head bolts are 3/8-16 x 1-1/2 in. long with stainless steel hex nuts. The mounting hardware, four (4) structural mounting bolts are 1/2-13 x 1-1/4 inch long, and the mounting hex nuts and washers are all galvanized. The TB300 accommodates a mast size range of 1.500 to 2.000 in. OD. Designed and built for vastly improved longevity, our thrust bearings reduce the load on your rotator motor more efficiently than the old standard version. Order DX Engineering TB300 Advanced Design Thrust Bearings for your tower project with 2 inch OD mast.
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$265.99
DX Engineering Heavy-Duty 4130 Chromoly Steel Masts
DX Engineering offers Heavy Duty 4130 Chromoly Steel Masts in both 11 foot and 22 foot lengths. DX Engineering Heavy-Duty 4130 Chromoly Steel Masts offer ham radio operators an opportunity to stack large antennas. These 2-inch and 3-inch outside diameter galvanized masts feature a 0.250-inch wall thickness and meet ASTM A-513 Type 5 ratings. These high-strength carbon steel masts are cold-drawn and electric-welded with a specified yield stress rating of over 100,000 psi! Tensile strength minimum is above 110,000 psi. Minimum Rockwell B hardness is 96. They are temperature stress-relieved to ensure consistent mechanical strength. Compared to standard galvanized plumbing pipe, the Heavy‑Duty 4130 chromoly steel mast offers substantially greater strength and durability. The galvanizing on these masts meets ASTM A123/A123M specifications. As with all hot dip galvanized products, surface irregularities are normal. Any cut ends are protected with a cold galvanizing coating. Important: Because these masts are galvanized, their overall outside diameter will be larger than the nominal size. The 2 inch mast may measure up to 2.070 in. OD, and the 3 inch mast may measure up to 3.130 in. OD. Are you planning on stacking a few mono-banders on the tower? Are you going to have multiple Yagis stacked high and deep on an H frame? Are you raising a BIG log-periodic? If you are going to loft big antennas with a lot of wind area, then you absolutely need a DXE Heavy-Duty 4130 Steel Mast atop your heavy-duty tower! DX Engineering Heavy-Duty 4130 Chromoly Steel Masts may be ordered and picked-up at the Summit Racing Equipment Retail Store, 1200 Southeast Ave, Tallmadge, OH 44278. Because of their length, these masts require truck freight shipping. Our system automatically calculates our low cost truck freight rates to any location within the continental United States. With no obligation to purchase, simply click ADD TO CART, enter your ZIP Code, and click CALCULATE to view your shipping cost. Due to size restrictions, air freight is not available. For information regarding a surface freight shipment of these masts to locations outside of the continental US, send an e-mail inquiry to dxengineering@dxenginering.com.
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$405.99
DX Engineering TB400 Advanced Design Thrust Bearings
DX Engineering TB-400 Advanced Design Thrust Bearings offer a major advance in mechanics that solve the issues with competing tower mast bearings that wear out too quickly. They are specifically designed for a vertically mounted 2.5 to 3.0 inch OD tower mast installed for the efficient rotation of directional HF, VHF, UHF and SHF antennas. Introduced in early 2022, the upgraded DX Engineering TB400 features high quality stainless steel ball bearings and stainless steel races that keep the bearings very clean. Compared with ANY OTHER thrust bearings, our TB400 thrust bearings are firm and strong with an ultra-low rotation resistance that has to be seen to be believed. These heavy-duty bearing assemblies are cast from high-strength zinc-aluminum alloy, precision machined and assembled to last for the life of the tower installation. DX Engineering Thrust Bearings are 7 in. diameter overall and mate with tower bearing plates for ROHN or Amerite towers. DX Engineering thrust bearings mount directly to the pre-drilled "Flat-Top" Tower Section models 25AG4 45AG4, as well as on Bearing Plate models BPL25G, BPL45G, or BPL55G which may be added to straight 25G, 45G or 55G Tower Sections, respectively. They may be used on the combination model BAS25G Bearing Accessory Shelf for straight 25G Tower Sections. They may also be used on any Amerite Tower and accessory that corresponds to the ROHN part numbers listed above, including tower-top bearing shelves for AME-25, 45 and 55 series towers. NOTE: Accessory Shelf models that fit inside of ROHN or Amerite 25G do not accommodate DX Engineering Thrust Bearings. These bearings are intended only for top mount on flat top 25G tower. The DXE-TB400 3 inch Thrust Bearing includes mounting hardware Patch Bolts (4) are 1/2-13 x 1-1/4 inch long. Patch Bolts have a yellow thread lock compound (one time use) on the threads to help ensure the bolts stay tight once installed. If removed, another thread lock compound will be needed prior to re-installation. The three stainless steel mast capturing and centering hex head bolts are 3/8-16 x 1-1/2 in. long with stainless steel hex nuts. The TB400 accommodates a mast size range of 2.500 to 3.000 in. OD. Designed and built for greatly improved longevity, our thrust bearings reduce the load on your rotator motor more efficiently than the old standard version. Order DX Engineering Advanced Design Thrust Bearings… today!
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$321.99
DX Engineering Lightning Rod Kits
The use of DX Engineering Lightning Rod Mast Mounts could protect your tower, antennas and station equipment from disastrous lightning damage. DX Engineering Lightning Rod Mast Mounts are 1/8 in. heavy-duty stainless steel clamps that will long outlast your steel tower. Their optional bolts (choose DXE-LRMM-FAST by combined mast and lightning rod diameters) are also high-quality stainless steel. Together, they are extremely durable clamps to keep your lightning rod in place. Lightning searches out the path of least resistance to ground. If that path is your tower, rotator and rotor bearings, antennas and coax, or the ground and electrical connections to your rigs, then that's where it will go. Providing a better path (one with very little resistance) is the key to keeping lightning outside the shack and limiting damage. When used with proper tower grounding, a heavy rotor-bearing bypass cable and installed coaxial surge protectors, a lightning rod above your antennas may save the day. Don't ignore proper grounding and lightning protection! Make a list of all the items you need to upgrade your station's lightning defense. Make sure a mast mounted lightning rod and DX Engineering Lightning Rod Mast Mounts are added to your list.
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$281.16
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$377.97
DX Engineering Insulator and Bent Pin Shackles Kits
DX Engineering Insulator and Bent Pin Shackle Kits are used for guy line attachment to towers for Amateur Radio and commercial applications. Insulated attachments prevent RF noise that can be created by Two kits are offered that include three Insulators of either size and three Bent Pin Shackles. The included porcelain guy strain insulators are commonly known in ham radio tower work as the "502" or the "504" so that is how these insulators are numbered. They have the mechanical strength of 10,000 pounds and 12,000 pounds, respectively. Each accepts big grip dead ends for either metallic or non-metallic guy lines. Also known as a clevis in the power industry, Bent Pin Shackles are specially designed with a removable bent bolt and locking nut to go through the outer hole of the matching insulator. Forged from 1/2 in. steel and hot dip galvanized, these shackles have a minimum ultimate strength of over 12,000 lbs. and have a rounded end that is large enough to be used around a tower leg. However, the assembly of the guy line and these insulated attachments are typically connected to a tower ear or guy bracket with a screw pin shackle used as a link. Order one DX Engineering Insulator and Bent Pin Shackle Kit for each level of guying. For those who already have insulators, Bent Pin Shackles are also available without insulators, in a set of three. Look to DX Engineering for the high quality and unique tower hardware that you need.
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$253.98
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$261.98