BMG’s bearings division – which has secured exclusive supply, service and distribution agreements with leading manufacturers, including NSK and NTN – introduces the latest technologies, trends and products to the local market on a regular basis, to meet demand precisely.
“Recently launched spherical roller bearings for industrial machinery include the NTN Ultage series and the NSKHPS series. NSK has also developed high capacity cylindrical roller bearings, the EW and EM series,” says Rouff Essop, general manager, bearings division. “Standard bearings have been developed by manufacturers, employing new technologies and materials, to produce spherical and cylindrical roller bearings that offer extended service life, greater reliability and improved ease of use.”
NTN Ultage sealed spherical roller bearings (WA type), which are based on the internal design of NTN’s standard EA type spherical roller bearings, have larger roller diameters and the maximum number of rollers, to provide the industry’s highest load capacity. These rollers are guided with the window type press steel cage. This new series, with a light, compact design, offers up to five times longer service life than previous models.
Contact type rubber seals prevent the intrusion of foreign matter and a specially designed lip structure maintains constant contact pressure of seals to secure the dust-proof capability, even in under-aligned conditions. NTN sealed spherical roller bearings, which are pre-lubricated with long-life grease, do not require cleaning or greasing when being mounted. An oil groove and holes on the outside diameter of the outer ring ensure there is adequate greasing into the inside of the bearing.
New developments of NSK EM and EW cylindrical roller bearings include a greater number of larger rollers than conventional bearings, to offer higher load ratings. One piece, high strength roller guided machined brass cages ensure improved performance and reduced wear. The service life of these bearings has been doubled.
Noise and vibration levels have been reduced by about 70% and the limiting speed has been increased by up to 25%. A special pocket profile enhances roller guide accuracy and ensures improved lubricant flow. NSK is continually developing products with greater strength and higher accuracy. The NSKHPS range incorporates a new compact internal design and the latest materials and manufacturing technology.
These spherical roller bearings, with a 25% greater dynamic load rating than previous models, have a running life nearly double that of conventional bearings of the same size. The maximum limiting running speed has improved by 20% and a special cage design eliminates the need for a guide ring, allowing for the placement of additional larger rollers, which in turn increase load capacity.
During rotation of conventional spherical roller bearings, slip between the raceway and roller causes fatigue, which eventually leads to flaking. To counter this, NSK has developed a special treatment on the surface of the outer ring that improves traction of rollers and controls the rotational speed of these rollers. A nitriding treatment on the surface of the cage, which forms a fine, hard and more uniform surface, reduces cage wear in harsh operational conditions.
BMG, which has grown significantly over the last 40 years from a single Bearing Man shop, has over 120 outlets throughout southern Africa and continues to expand on the continent.
The company’s extensive range now encompasses bearings, seals, power transmission components, electric and geared motors, as well as belting and fasteners. BMG also distributes filtration, hydraulics and pneumatics systems, tools and equipment.
Ten specialist divisions, with advanced technical skills, support the company’s commitment to applying technical knowledge and depth of experience, to maximise the efficiency and profitability for every customer.
Through its critical focus on entire production processes, BMG’s extensive range of quality branded components, engineering solutions and technical services, optimise productivity and enhance process plant operating reliability.
For more information contact Rouff Essop, BMG, +27 (0)31 576 6200, [email protected], www.bmgworld.net
| Tel: | +27 11 620 1500 |
| Fax: | 086 670 3337 |
| Email: | [email protected] |
| www: | www.bmgworld.net |
| Articles: | More information and articles about Bearing Man Group T/A BMG |
© Technews Publishing (Pty) Ltd | All Rights Reserved
printer friendly version