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DRO PROS sells Newall, Easson and Fagor Digital Readout kits starting at only $599! Call Toll Free now at 1-877-628-6028 for all your digital readout needs!
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The "Blue Strip" Between the scale and the reader head there is a blue strip which helps to maintain the correct distance between the reader head and the scale for installation purposes. This should be removed after installation.
Installation Standards & Requirements
Note: Between the scale and the reader head there is a blue strip which helps to maintain the correct distance between the reader head and the scale for installation purposes. This should be removed after installation.
Note: To give the best protection, the scale should be mounted with the yellow rubber seals (lips) facing down.
Where extreme exposure to swarf, coolant, dirt and compressed air are present, sheet metal cover guards that are supplied should be placed over the scales for maximum protection.
Download the: Installation Instructions
(Click the graphic for a larger picture) 1. The travel length of the glass grating scale must be longer than the maximum travel of the machine, there should be at least 10mm clearance (approximately 1/2") between the ends of the glass scale and the maximum travel of the machine as shown in the following figure:
2. To ensure the graduated glass scale to be installed is reliable, and to avoid any possibility of scale misalignment, the scale should be installed on a machined, flat surface whenever possible. In the case where there are no machined flat surfaces available on the machine, flat blocks or stainless steel fillers should be used. Remember, the scale ends and the reader head must be installed on a flat surface. (a) If the scale mounting surfaces are not parallel to each other (i.e. As per shown in figure A and B), the parallelism of the two mounting surfaces must be less than 0.1mm. (b) If the mounting surfaces are perpendicular to each other, the squareness of these two mounting surfaces must be less than 0.1 mm. It is very important that the scale body be aligned parallel to the travel of the machine slide. For scale travel less than 950mm, the maximum parallel error between the scale and the machine slide must be less than 0.1mm 0.15mm. For scale travel longer than 950mm, the maximum alignment parallelism error must be less that 0.1mm.
(c) The clearance between the reader head and scale body must be kept between 0.8mm - 1.5mm. (d) The reader head must be less than 0.5mm parallel with the scale and can be set with feeler gauges to allow the reader head to move unrestricted along the scale. 3. If a dial indicator is used to align the scale, it is important to ensure that the angle between the dial indicator lever tip and the surface measured is less than 3 degrees to avoid a cosine measurement error. lf a vertical dial indicator is used as per the following figures shown, it is important to ensure that the dial indicator is perpendicular to the measured surface to avoid error.
4. The following considerations must be taken to select the proper installation locations:
(a) Scales should be installed on a level, machined surface.
(b) The opening of the scale must not be installed as to be directly exposed to swarf, oil, water, dust or other foreign products. The provided protectant covers should be installed.
(c) In cases where machined flat surfaces are not available, an installation block or strip should be used to provide a flat datum for the installation. The installation strip must be as rigid as possible.
5. There must be a clearance of at least 3.0mm between the scale and scale cover.
6. All the tapped screw holes must have at least 6 threads to allow the screw to be firmly secured into the tapped holes. For a screw securing a heavy load, the tapped hole must have at least 8 threads. After tapping, the holes should be deburred and cleaned.
7. All cables must be fixed, but allow for the maximum machine travel movement. Below are diagrams, recommending the minimum radius that should be used for bending the scale cable:
8. Grounding / Earthing is very important for noise immunity. The grounding resistance must be less than 1.0 Ohm. 9. The Horizontal and Vertical alignment measurements are taken a minimum of 20mm away from the scale ends as per the following figure:
Scale "Read Direction"
It makes no difference which way the scale initially reads. Scale 'read direction' can be easily changed in the parameters menu after installation. Mount the scale in the position / direction which makes the most sense. In most cases, it makes the most sense to mount the scale with the cable exiting to the rear of the machine, away from the operator. Please keep in mind every installation is unique, so there is no one "correct way" to mount scales. Referencing our "Customer Showcase" page may help immensely by seeing how our other Customers chose to mount their scales.
For general reference, we provide the following diagram. Remember, scale read direction is, in the end, a matter of personal choice.
Fixing the “X” Scale on a Milling Machine One of the easiest ways to set up an “X” scale on a milling machine, if the side of the table is machined, is to clamp two parallels to the bottom of the flat table surface so that the scale sits on the parallels. Carefully drill and tap the holes for the provided screws.
Mount the cover over the scale and drill and tap the holes to secure it to the table making sure that there is 3mm clearance between the cover and the scale.
If the surface is not machined true, then first mount the backing plate, then insert and adjust the grub screws on the backing plate, checking with a dial indicator, until the scale is square and perpendicular to the machine slides.
Mount the scale on the backing plate using the pre drilled holes, checking that the scale is parallel with the machine slide with a dial indicator. When the scale is mounted, next fix the reader head to the saddle, ensuring the reader head is parallel and in line with the scale.
Attaching the “Y” Axis Scale. First, mount the backing plate.
Second, insert and adjust the grub screws on the backing plate, checking with a dial indicator, until the scale is square and perpendicular to the machine slide.
After the scale is aligned to the axis, drill and tap the saddle and mount the bracket insuring the reader head is square and parallel to the scale.
Secure the cable making sure to leave enough free cable to allow for the travel of the slide.
Fitting the “Z” Axis
The "Z” axis scale should be installed on the side of the column, ensuring that the open side of the scale is away from direct swarf and coolant. The bracket is mounted on the knee, and should wrap around the scale to allow for the cover to protect the scale.
LATHE INSTALLATION To install a readout on a lathe the following tips can be used. To mount the cross slide scale, select a flat surface that is suitable and clear of the traveling parts of the lathe. The scale should be mounted insuring that that it is parallel and square to the slide.
When mounting the reader head, ensure it travels inline and square to the scale to avoid any damage to the scale.
Testing for parallel can be done by either a dial indicator or a precision level.
The longitudinal scale should be mounted on the back of the Lathe (Fig 1) with the open side of the scale facing down and must be parallel to the bed. The reader head is mounted to the saddle (Fig. 2 & 3) via the brackets provided. Some modification may be required for some lathes. Covers should be mounted over the slides as per Fig.4.
Note: Between the scale and the reader head there is a blue strip which helps to maintain the correct distance between the reader head and the scale for installation purposes. This should be removed after installation.
Our goal is to provide our customers the best value DRO products on the market
In order to achieve this goal, we pledge the following three "Reasons to buy from DRO PROS":
Number 2 reason to buy from DRO PROS: We answer our phones. Good luck understanding or getting ahold of the "other guys". We hear this every day - "I bought a DRO from the "other guys" but when I got it one of the scales is too long - now I'm stuck with it and he's not returning my phone calls..." We all know you get what you pay for. Buying a DRO without proper support or tech help is simply not a good idea.
Number 3 reason to buy from DRO PROS: You'll get it fast. We carry our own inventory of Easson and Newall products on site, in the USA, not overseas. This means we ship our products the same or next day at the latest, depending on what time you place the order. This means you get your order in 2-3 days, not 2-3 months. Check out what customers say about the "other guys": "Had no inventory, slow shipping...", "somewhat slow on the shipping though", "slow shipping, no returned phone calls", "slow shipping from supplier". This is not the type of service you'll get from DRO PROS.
NOTE: All DRO PROS digital readout components carry a 1 year warranty. At DRO PROS, we take care of our customers. Have an issue or need some help? Let us take care of it with a toll-free call to California! Call us now TOLL FREE within the United States at 1-877-628-6028! (Customers outside the United States can always reach us at (707) 452-8437)
DRO PROS sells Newall, Easson and Fagor Digital Readout kits starting at only $599! Call Toll Free now at 1-877-628-6028 for all your digital readout needs!
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