When smooth linear motion is of paramount importance
For applications where reductions in weight are paramount, IKO offers the cost-effective precision linear slide range. Made from stainless steel, and available in recirculating (BSR) and nonrecirculating (BSP) options, this range is highly flexible. It features a simple tworow, four-point contact structure, high motion accuracy and stable load carrying capacity. This can be further enhanced using a built-in rack and pinion system in the BSP variant (BSPG) for applications where there is potential for cage creep. This phenomenon is generally seen in many vertically orientated, high-speed applications, and IKO’s design reduces the chance of this occurring.
For applications that may receive fluctuating and complex loads, but still need to see consistent repeatable results, the BWU range may be more appropriate. The high rigidity, precision linear slide units offer design engineers the possibility of adding a secure mounting position that can handle loads of up to 12,100N. They are also exclusively made of stainless steel, making them suitable for potentially corrosive environments or cleanrooms. In addition, they are suitable for applications where rust prevention oil is not preferred.
For designers and machine builders looking to increase load ratings further, while keeping the overall machine size to a minimum, IKO can then offer its crossed roller ways (CRW). This range is available in three different variants, including a rack and pinion option (CRWG) and a heavierduty variant that increases the strength of the internal components (CRWH). These products all utilise cylindrical rolling elements instead of ball bearings, and provide increased load rating capacity and improved rigidity. This, in turn, increases the stability of the overall product.
Despite the variation in materials and structure, all of the models share a similar design. With single linear caged bearings consisting of ball or roller elements running along inner and outer tracks. These bearings are arranged in parallel, one on each side of the slide, to support the weight of the table (or carriage) and its mounted load as it moves.
The various designs all provide precise accurate motion, normally over short stroke lengths. In the BSP, BWU and CRW ranges, this motion is further enhanced by their non-recirculating design. Due to the compression and release of the rolling elements as they pass in and out of contact with the raceways seen in recirculating designs, there is no chance of the balls causing any background distortions in the data gathered. For the same reason, the bearings run very quietly. In addition, maximum speeds of 50m/min can be achieved.
While IKO prizes quality over pricing, one thing for customers to keep in mind when buying precision linear ways is how many parts are included. This is particularly important when specifying the CRW range. While, for historical reasons, many competitors sell these parts in what is essentially only half of a full set required for any motion profile – two ways with one cage and rolling elements – IKO always sells CRWs as a complete kit: four ways with two cages and rolling elements. For that reason, a price that is perhaps 75% higher for an IKO full set (for example) when compared to a competitor’s set might prove to be a more cost-effective option, as two sets of the competitor’s product would be needed to make up the same quantity as IKO’s offering.
By offering the right bearings in an installation-friendly manner, IKO aims to meet its customers’ needs – and often exceeds them.
Contact IKO UK today at 01908 566144, or email enquiries@iko.co.uk to discuss your motion control needs. Alternatively, visit the IKO website.
