DX Engineering DXE-TB300 Instructions Rev

2” Thrust Bearing

DXE-TB300

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 2 inch
OD tower mast mounted vertically, 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 high­strength aluminum, precision machined and assembled to last for
the life of the tower installation.

DX Engineering Thrust Bearings 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.

The Thrust Bearing 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.

Designed and built for vastly improved longevity, our thrust bearings reduce the load on your rotator motor
more efficiently than the old standard version. TB300 fits masts from 1.5” OD to 2” OD. The TB400 fits
masts from 2.5” OD to 3” OD.

Warranty

All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date of shipment. DX Engineering’s sole obligation under these warranties shall be to issue
credit, repair or replace any item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other work, unless such charges
are authorized in advance by DX Engineering. If DX Engineering’s products are claimed to be defective in material or workmanship, DX Engineering shall, upon prompt notice thereof, issue shipping instructions for return to DX Engineering
(transportation-charges prepaid by Buyer). Every such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing. The above warranties shall not extend to any products or parts thereof which have
been subjected to any misuse or neglect, damaged by accident, rendered defective by reason of improper installation, damaged from severe weather including floods, or abnormal environmental conditions such as prolonged exposure to
corrosives or power surges, or by the performance of repairs or alterations outside of our plant, and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s specifications. In addition, DX
Engineering’s warranties do not extend to other equipment and parts manufactured by others except to the extent of the original manufacturer’s warranty to DX Engineering. The obligations under the foregoing warranties are limited to the
precise terms thereof. These warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY
WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR DX ENGINEERING ANY OBLIGATION OR
LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING.
©DX Engineering 2022
DX Engineering®, DXE®, DX Engineering, Inc.®, Hot Rodz®, Maxi-Core®, DX Engineering THUNDERBOLT®, DX Engineering Yagi Mechanical®, EZ-BUILD®, TELREX®, Gorilla Grip® Stainless Steel Boom Clamps, Butternut®,
SkyHawk™, SkyLark™, SecureMount™, OMNI-TILT™, RF-PRO-1B®, AFHD-4® are trademarks of PDS Electronics, Inc. No license to use or reproduce any of these trademarks or other trademarks is given or implied. All other brands and
product names are the trademarks of their respective owners.. Specifications subject to change without notice.

DXE-TB300-INS Rev 1

2” Thrust Bearing Drill Template

DXE-TB300

Drawing is scaled to the rulers shown

Technical Support

If you have questions about DX Engineering products, or if you experience difficulties during the installation, contact DX Engineering at [phone]. You can also e-mail us at: [e-mail]

Information and Instruction Sheet Updates

Every effort is made to supply the latest information or instruction sheet revision with each product. Occasionally an information or instruction sheet will be updated between the time your DX Engineering product is shipped and when you
receive it. Please check the DX Engineering web site (www.dxengineering.com) for the latest revision information or instruction sheet.

© DX Engineering 2022
DX Engineering - 1200 Southeast Ave. - Tallmadge, OH 44278 USA
Phone: [phone] - Tech Support and International: [phone] - Fax: [phone]
E-Mail: [e-mail]