Feature Power transmission
A simple solution for the power transmission industry
Despite being one of the simplest components, the shaft collar is used in many applications within the power transmission industry. Now, quick clamping versions are being manufactured by Ruland which offer easy adjustment for rapid setup or frequent changeover
D
espite being one of the simplest and most overlooked compo- nents in the power transmission industry, use of the shaft collar
is widespread, and they can be found in virtually any type of equipment. Not only are they used by themselves for various applications – including mechanical stops, locating components and bearing faces – but they are frequently accessories to other compo- nents to create assemblies for many types of power transmission equipment including motors and gearboxes. Quick Clamping Shaft Collars are
manufactured by Ruland. These have a low-profile integral clamping lever, in contrast to the typical approach of employing separate single or double tangential screws. These components are ideally suited to quick positioning adjustments in light duty stationary or low-RPM rotating shaft applications having frequent setup changes or adjustments; or in situations where the use of tools is not practical. Quick Clamping Collars do not mar the shaft. These components can, for example,
be found in the printing industry where they are used in the positioning of rolls of media on a shaft within a production process. Repositioning adjustments or changes of raw material can be quickly
and easily made without the need for tools or time consuming fastener fine- tuning, improving both operator and machine productivity. Quick Clamping Collars also perform well in other applications such as fixture and guide rail adjustment, use of the clamp as a spacer, or when mated with light duty split hub power transmission compo- nents such as gears and sprockets. The collars can also be machined to facilitate the mounting of other components. In fact, many application
benefits are being realised in packaging, food pro- cessing, medical, general manufacturing and other industries.
Efficiency
The collar clamping mecha- nism works quickly and efficiently with simple hand opening of the integral clamping lever, positioning the collar on the shaft, and closing the lever flush with the outer surface of the collar. The design of the cam on the lever and the mating machined surface on the collar assure a tight fit with a maximum axial load of 35 to 120 lbs / 133 to 489 N depending on the collar bore size.
Supporting the British Steam Car record
support rigs during the British Steam Car’s successful attempt to break the land speed record in August last year. The gearboxes, which had to operate in temperatures over 37˚C, were used as speed reducers on the rigs and fitted between a 31Hp Briggs & Stratton engine and a high pressure pump operating at speeds up to 400rpm. The car, owned by The Steam Car Company and driven by Charles
T
Burnett III, broke the record at Edwards Air Force base in California by achieving an average speed of 139.843mph over two consecutive runs on a measured mile. The following day, the car was driven by Don Wales over a measured kilometre, achieving another record of 148.308mph over two consecutive runs. According to Motor Technology, the rigs performed a vital role during
the challenge as they were used to quickly and efficiently refuel the cars between each of the two consecutive runs.
Motor Technology
T: 0161 217 7100
34
Enter 244
hree Tramec EP 120 planetary gearboxes with ratios of 7:1 and an output torque of 150N were supplied by Motor Technology for use on the
The collar clamping mechanism works quickly and efficiently with simple hand opening of the integral clamping lever
However, in situations
where higher holding power (clamp axial load) is required, the Quick Clamping Collar is not the recommended choice, and one-piece and two- piece shaft collars are available for such applica- tions as these.
All the company’s shaft collars,
including the Quick Clamping Shaft Collars, are single point faced to ensure perpendicularity and proper alignment. This critical manufacturing step assures precise shaft collar face to bore relation- ship, resulting in correct component positioning on the shaft and even pressure on interfaced components. Manufactured from high quality
aluminum with Type-II sulfuric anodised finishes, the Quick Clamping Shaft Collars have a black finish on the collar and a gold finish on the clamping lever for added visibility. Aluminum collars are corrosion resis- tant, lighter than other metals, have low inertia and have non-magnetic properties. All Ruland products are RoHS and REACH compliant. Available standard sizes for the
Quick Clamping Shaft Collars are 0.375” to 1.5” in the inch series and 8mm to 38mm in the metric series. The range is available from UK distributor, Lenze.
Ruland www.ruland.com
Lenze T: 01234 321321 www.lenze.co.uk
Enter 242 Enter 243
MECHANICAL COMPONENTS SUPPLEMENT – MARCH 2010 Design Solutions
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60