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PRODUCTS CLUTCHES, BRAKES & COUPLINGS SLIT COUPLINGS OFFER A RANGE OF


BENEFITS TO DESIGNERS Slit couplings designed and manufactured by Reliance Precision are now available through Ruland’s eCommerce platform and worldwide distribution network. These are zero-backlash and manufactured from a single piece of aluminium with intermittent


slit cuts, allowing for high torque and torsional stiffness capabilities, low inertia and long-life. Reliance’s design uses a


proprietary slit pattern that has radiused as opposed to squared edges, reducing stresses that build up during misalignment conditions and torque loads. According to the company, these offer designers a coupling that has a balance of


torque, misalignment and torsional stiffness capabilities. They have comparable torque to a single disc coupling, torsional stiffness to a stainless steel beam coupling, and misalignment to an aluminium beam coupling, the company explains. Ruland offers slit couplings in RL- and RS-series. RL-series couplings have longer


lengths allowing for greater parallel misalignment capabilities and increased torsional stiffness. RS-series couplings are designed to fit in compact spaces and offer parallel misalignment capabilities, an upgrade to the single disc coupling which has comparable torque but no accommodation for parallel misalignment. Both series can accommodate all forms of misalignment with low bearing loads. They have a zero-backlash balanced design allowing for speeds up to 70,000 rpm. The slit couplings are available in clamp screw and set screw designs with inch,


metric, and inch to metric bore sizes ranging from 1.5mm to 12mm and 1/8in to 3/8in. The couplings will be beneficial for equipment designers in industries such as


packaging, scientific, semiconductor, solar, medical and automation. Ruland


www.ruland.com DISC BRAKE PADS IMPROVE SAFETY


Featuring premium friction material and a profiled design to optimise contact with the discs, JOST UK’s Blue high performance disc brake pads are designed to improve road safety and increase productivity for operators. The blue colour is to aid their identification and save time in workshops and garages.


The brake pads are sized and profiled for optimum contact with the brake disc and include a slot that serves to collect and extrude dirt so that maximum braking effect is always maintained. The friction material has a green colouring infused into it which shows on the working surface to aid long term condition monitoring – once the green begins to fade it is time to change the pads. The pad is supported on a strong steel back plate, which is coloured the distinctive blue. On the inner surface of the back plate is a soft underlay that ensures secure mounting of the brake pad.


JOST www.jostuk.co.uk HIGH PERFORMANCE ELECTROMAGNETIC BRAKING SYSTEM


Securing the long-term integrity of the brake in difficult conditions is important for consistent stopping performance, and outdoor and certain indoor applications place greater demands on an electromagnetic brake. Ultimately, specialisation is required to deliver this performance level, which in many cases translates to an increased brake cost, explains Mourade Vaneeckhoutte, global sales director at Altra Industrial Motion Corp. This is especially true when it comes


to specifying electromagnetic brakes with a high IP rating. A higher IP rating usually translates to an increased cost, which is before any additional options have been specified. However, the utilisation of modern composite materials is challenging this, allowing for innovative brakes to combine both high performance and value. Warner Electric’s FRCB is an example of this.


Designed with a specialised composite, this can provide highly reliable stopping performance in challenging conditions due to an IP66 rating. Offering value and performance in outdoor and demanding indoor applications, and a modular design, OEMs can specify the FRCB to reduce weight and costs. To secure consistent brake friction material performance over a wide operating window, Altra has brought the formulation of friction material in-house, allowing total control of the formulation


process, which enables the operating window of the material to be widened. Warner Electric’s


new W134 brake friction material delivers consistent performance across varying operating conditions in heavy-duty powertrain applications. It has been formulated to provide static and dynamic braking functions with high torque stability, a high friction coefficient


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matched by non-sticking properties ideal for outdoor applications. An exact fit for Warner’s existing range of electromagnetic brakes, W134 has been optimised to consistently carry out high energy braking and heavy stops in all conditions. Of further benefit, the contactless WES


(Warner Electric Sensor) ensures accurate brake monitoring. Without relying on a mechanical contact, contact pollution issues are eliminated, ensuring repeatable accuracy. Furthermore, between the operating temperatures of -40˚ to 105˚C, hysteresis is less than 0.05mm. Consequently, the limitations of microswitches and proximity switches are removed, allowing operators to gain highly accurate monitoring data to plan maintenance accordingly. Warner Electric’s FRCB brake range, W134


brake friction material and the WES can all be specified together.


Warner Electric www.warnerelectric-eu.com JULY/AUGUST 2020 | DESIGN SOLUTIONS / DESIGNSOLUTIONS


Brake system requirements for electric and hybrid vehicles are different than those for vehicles equipped with conventional powertrains – because EHV models feature large, heavy batteries, extra stopping power is needed. In addition, intermittent engagement of the vehicles’ regenerative braking systems can prevent proper heating of brake pads and discs. To absorb this added stress, EHV models need an enhanced brake fluid with high dry and wet boiling points. Furthermore, because regenerative braking systems can


help extend the service life of brake pads and related components, the brake fluid is likely to be replaced less frequently, which can lead to corrosion issues. Another concern is the potential electrical currents near the braking system, which may occur if the brake fluid has moderate to high levels of electrical conductivity. Formulated specifically to address these issues, FERODO


FBE050 brake fluid is said to help contribute to improved brake system performance and reliability on hybrid and electric vehicles. Features of the brake fluid include a high dry boiling point (274˚C), high wet boiling point (184˚C), enhanced corrosion resistance, reduced conductivity, low viscosity (meets ISO 4926 Class 6), and it meets and exceeds DOT 3, 4, 5.1 and 4LV specifications. The company also offers quality replacement brake


pads for 98% of electric and hybrid passenger vehicles on European roads. The brand’s ECO-Friction brake pad is highly efficient for electric cars, hybrids and vehicles equipped with electronic parking brakes.


FERODO www.ferodo.com


BRAKE FLUID AND PADS FOR ELECTRIC AND HYBRID VEHICLES


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