BMG’s range of Nord-Lock bolt securing systems includes the X-series washers, designed to secure bolted joints exposed to severe vibration and dynamic loads. The wedge-effect design prevents spontaneous bolt loosening and the system’s integrated spring effect compensates for the loss of preload due to slackening. Each washer pair has cams on one side and radial teeth on the opposite side to secure the bolted joint with tension, rather than friction. The conical shape of these washers creates an elastic reserve in the bolted joint to compensate for the loss of preload and prevent slackening.
Advances in polymers and sandwich composite technology have the advantage of strength to weight ratio and corrosion resistant properties that make applications lighter, without losing strength; but these materials are softer than metal materials previously used and make slackening an additional challenge. The multifunctional wedge-locking concept of the X-series combats these problems.
Surface treatments, which are common for corrosion protection, can also lead to slackening as the bolt sinks into the treated surface after tightening. Even a thin millimetre surface would normally put bolts at risk, but with the compensating spring of the X-series, slackening is prevented. The combined tension and spring action combats the effects of surface treatments, thermal cycling and vibration.
Independent tests show this series performs better than conventional washers when compensating slackening in static conditions and in preventing rotation of the fastener when the joint is exposed to vibration in the dynamic phase. These are the only washers currently available that can secure bolts from both critical loosening factors – spontaneous loosening and slackening – at once.
Innovative sealing and bearing solution for pulp machine SKF South Africa
Shaft power components
A leading South African manufacturer of paper-making equipment sought to modify an existing pulp machine and turned to trusted partner SKF to assist with the redesign of a critical sealing arrangement.
Read more...Polymer bearings for maintenance-free bottling system igus
Shaft power components
A favourite South African beer which is to be found on many a beer connoisseur’s table is being brewed in Belgium with the assistance of lubricant-free polymer bearings that will not contaminate the beer.
Read more...Industrial valve solutions Bearing Man Group T/A BMG
Shaft power components
BMG’s Fluid Technology division supplies and supports an extensive range of components for fluid technology systems. These include valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.
Read more...Direct-controlled seat valve
Shaft power components
A new direct-controlled seat valve enables storage-free, load-tight holding functions in dynamic linear units without an additional control pressure supply, and offers significant advantages over classic, pilot-controlled solutions, particularly in stationary and servo hydraulics.
Read more...Wind energy in the Black Forest
Shaft power components
For more than 20 years, numerous wind turbines have stood in the Black Forest and are now receiving a performance boost through repowering projects.
Read more...The advantages of using an adjustable cable gland
Shaft power components
Pratley continues to demonstrate its engineering leadership with its innovative adjustable cable gland, designed to significantly reduce maintenance and labour costs across a wide range of industrial applications.
Read more...Single DDI cable solution simplifies connectivity SEW-EURODRIVE
Shaft power components
Cabling can be one of the most challenging aspects of automation and drive system installations, often leading to delays, faults and inefficiencies. SEW-EURODRIVE offers a solution that simplifies connectivity, its innovative Digital Data Interface technology combined with a single cable system.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version