Viewing blog posts in the Technical category.
Plain bearing guides are a natural progression for Accuride. Expanding on Accuride’s already established product ranges of partial or full extension ball guides, linear plain bearings seemed to compliment this range, while also adding something new.
Plain bearings have a range of important factors. The polymer bearing needs to have a low frictional force against its counter surface and to maintain a low rate of wear. This is helped by having a hard counter surface; in this case hard anodised aluminium.
Accuride’s new linear friction guide range benefits from many unique design features. The track design has an extruded cavity which runs through the internal length to help reduce weight and material usage and ultimately also reduces the end cost for customers. The guides also benefit from having equal wear capabilities when they are either top, under mount or side loaded. This means that no matter which way up you use these guides, their life span is always the same.
We conducted a vast amount of testing to narrow down our search for the perfect materials to use in our friction guide range. Once the top performing polymers had been selected, they then went under further, more specific environmental wear testing.
Our in house testing facility is great for our standard product ranges, but the new linear guides required a high degree of testing.
New test machines had to be designed and built so that we could test the product to the limits in terms of speed, wear and temperature. The new plain bearing guides can also last many millions of metres while in operation, so full and over length cycle testing had to take place.
Yes, at Accuride we constantly test the limits of any new and existing designs so that we can offer customers constantly improved products that can withstand higher loads and perform for longer. Any knowledge gained from testing is always incredibly useful to put back into the design and concept process.
Typically this will reduce to 25% of the side mounted load rating.
For example, if we state that a side mounted slide can take a 100kg load, then the load will be reduced to 25kg if it is flat mounted.
Look for this symbol on the datasheet to see if the slide can be used in this orientation.
DS0330, DZ3301, DZ3307, DZ3308, DZ0301, DZ0305, DS0305, DS3031, DZ3507, DZ5417, DZ7957, DZ9301, DP9301.
Accuride has several stock slides of 1m in length. It is important that you consider that the width of the drawer and load are both important when selecting the correct slide.
We presume that you need a full extension slide so that you have full access to the drawer. Both the 5321 and 9300 series slides are sold in long lengths. We also stock some very heavy duty aluminium slides, but we feel that these may be too large for this type of project.
Also consider any additional features that would be useful for this application, for example, soft-close, lock-in and out, and mounting options.
The decision to go for partial extension versus full extension is down to the type of access and the available space around the bed. If full access is important then go for the full extension slide type. If the space available around the bed is restricted or you do not need full access, then the partial extension slide may be the option to go for. They will both perform well in this type of application.
Providing the drawer width does not exceed the slide length, the available slide lengths of 60 cm, 65 cm or 70 cm will all be suitable. With the shorter length slide some access to the back of the drawer will be lost due to the shorter travel. If access is the important criteria, then go for the 70 cm option.
We have found, through tests and experience, that the optimum position is between 1/3 and 2/3 distance from the base of the drawer. Therefore the ideal position is on or just below the centreline as illustrated.
This will give you maximum stability for your drawer project.
However there are many and varied ways to mount drawers on slides; see our good and bad options on page 170 of our latest catalogue.
The 3832 has been around for many years and can be found across the world in many applications. Accuride’s continual re-invention of the slide has made it a best seller, and probably the most copied.
This versatile slide is what most cabinet makers would consider a ‘standard’. It has a 12.7mm thickness (½ inch), is compatible with both 32mm and traditional hole patterns, and can take loads up to 45kg, making it a good all-rounder for cabinet drawers where a side mounted slide is needed.
The first development was the addition of breathing tabs on the cabinet member. These seem pretty ordinary now, but this was an important first step in the evolution of the 3832.
The space between the cabinet and drawer is critical when fitting slides. This need for precision can make life difficult for woodworkers. So some of the fixing holes are located on a ‘breathing tab’; a small tongue of metal with a U slot around it. Because of the slot, the tip of the tongue can bend a bit out of the plane of the rest of the metal. That is, the cabinet member can pull away from the cabinet wall, just a little, to help absorb those tricky tolerances.
All 3832 slides include an integral quick release lever so that the user can separate the slide into the cabinet and drawer member.
This feature has two distinct advantages. The first is for the fitter. Being able to separate the parts of the slide and fit them individually onto the cabinet chassis and drawer makes the job a simple one.
Secondly, once installed, the disconnect lever is used to take the drawer out of the cabinet and put it back again without the need for tools; perhaps a benefit for the user rather than the cabinet maker.
The Cam Drawer Adjust offers installers a simple, yet precise mechanism for vertical drawer adjustment. The cam mechanism alters the vertical position of drawers by up to 4.8mm and is located at the front of the slide for easy access. It’s as simple as inserting a screwdriver and turning the mechanism to the left or right to provide the proper adjustment.
This may seem rather simple, but it is important that the slides are held in position – you don’t want the drawers bouncing open once closed and all 3832 slides have hold-in.
The hold-out is equally important for applications such as pull out keyboard shelves, when you would need it to stay open during use.
A dampened, soft-closing drawer just feels good and this one is side mounted, rather than the usual under-mount slide used in kitchen drawers.
Our self-closing slides ensure drawers come to a close and stay closed, keeping things looking neat and tidy. There are two options; a standard self-close and a heavier duty version, which is ideal for mobile applications such as trolley drawers.
If you like the look of simple, clean drawer fronts or need to design for those who have difficulty grasping knobs or handles, then our touch-release products are the answer. A gentle press on the drawer front releases the drawer and propels it outward about 45mm.
More fitting options are available through the use of clip on brackets, allowing both bottom and platform mounting. These can be fitted to the standard 3832 plus DO and SC/HDSC versions from length 35cm.
|3832 & 3832DH||3832||3832|
|Brackets 633xx||Brackets 633xx||Brackets 633xx|
This product has proved to have many different types of applications, so we asked our engineering department for a couple of options depending on the panel thickness.
Each carriage has 2 x M5 studs and the two options illustrated show the use of a connector bolt and a Nyloc nut. These are freely available and can be bought from your own fastening supplier.
Peter Parfitt of New Brit Workshop has uploaded his latest woodworking project on his YouTube channel. The mobile base includes Accuride’s push-to-open...