I am using Blaser Synergy 735, overall it has worked well for our needs.
It was used in a new machine (Doosan DNM5700) for almost 4 years, and recently we started seeing breakdown of the wipers on the waycovers.
This started in one location at the top corners of the Front Y waycover on the wipers, and is now observed on X left/right and rear Y waycover wipers.
We are going to replace the wipers, but we are wondering if anyone else has seen this problem with Blaser Synergy 735?
Does anyone have any issues running Blaser Synergy 735, specifically breakdown of wipers?
The wipers are Polyurethane, Shore A Hardness 85 per Hennig who made the waycovers and wipers
Blaser sales has told us that the Synergy 735 was tested and certified to be compatible with Polyurethane.
We have a Doosan machine, and when we visited the NJ factory office, they showed us they run Synergy 735 and this is why we used it. I was aware it is a full synthetic and could be harsh on plastics, so we watched concentration carefully.
We use filtered low TDS water, and keep the concentration of coolant rich (but within spec) for the most part as we like the rust inhibiting effect.
We sometimes see concentration go up when we get evaporation, and typically top off with pure filtered water
and maintain within the range of 6% to 10%. Blaser told us to use at least a 1% mix or higher on fillups and also to consider using an ultrasonic mixer, which seemed surprising but we will do it if this is necessary.
Blaser came right away when we reported this problem to them, and they checked our concentration of coolant that is 4.9% (just a bit low on concentration). This differed slightly from our measurement, so we are going to pay more attention to calibration of the refractometer.
It does get higher concentration when the coolant evaporates on our 80 gallon tank, so we try to stay within the range of 6% to 10% at all times and check it as we refill, but generally it goes to higher concentration when we get low level, but overall we are staying in the proper range of concentration.
They also checked our PH to be 7.9 which is within the acceptable range.
Blaser has taken lab samples of the coolant from the reservoir, and also our filtered makeup water, and we are expecting results from the lab soon. They did check our coolant about 6 months ago as it had turned from clear to yellow over time. At the time they said it was OK to keep running, but we figured 3 year run time was enough and we changed out to a new batch of coolant. The lab will also test for bacteria and other contamination that might be present and we will get a report soon.
We will replace and fix the wipers, but I am concerned about other seals and gaskets (so far no observed leaks anywhere) and still looking into what else may be affected. (If anyone has input on what other seals and gaskets to be aware of I am interested to know from experienced people, our service manager from the dealer was asked, but we did not really get feedback on other areas to monitor, so we will probably ask Doosan directly next)
We do see some paint lifting on some cast parts on the saddle as well, I can live with this, but wish it wasnt lifting
Any ones experience on this would be appreciated.
I am considering switching away from the Synergy 735 for this issue, but it would be great to know if anyone else has seen issues with degrading wipers or other plastic/gaskets. I understand wipers will need to be changed eventually, but how long should they last?
The Doosan has a grease cartridge lubrication(no way oil) and overall everything runs super clean
We do have an oil skimmer, and it always runs.
We dont cut anything except AL, Stainless 304 and some plastics and stock is clean/dry when we put it in
We never put any foreign chemical in the machine except a bit of mineral spirits to clean the table which we wipe off and this is minimal.
The wipers left a gummy sticky residue on the waycovers, and are brittle/pitted or missing in some areas on the waycover.
So Hennig agrees the material is showing "dissolution" and appears to be a chemical breakdown.
It would be appreciated to hear from anyone who uses Synergy 735 if you have seen similar issues.
Thanks,
Steve
It was used in a new machine (Doosan DNM5700) for almost 4 years, and recently we started seeing breakdown of the wipers on the waycovers.
This started in one location at the top corners of the Front Y waycover on the wipers, and is now observed on X left/right and rear Y waycover wipers.
We are going to replace the wipers, but we are wondering if anyone else has seen this problem with Blaser Synergy 735?
Does anyone have any issues running Blaser Synergy 735, specifically breakdown of wipers?
The wipers are Polyurethane, Shore A Hardness 85 per Hennig who made the waycovers and wipers
Blaser sales has told us that the Synergy 735 was tested and certified to be compatible with Polyurethane.
We have a Doosan machine, and when we visited the NJ factory office, they showed us they run Synergy 735 and this is why we used it. I was aware it is a full synthetic and could be harsh on plastics, so we watched concentration carefully.
We use filtered low TDS water, and keep the concentration of coolant rich (but within spec) for the most part as we like the rust inhibiting effect.
We sometimes see concentration go up when we get evaporation, and typically top off with pure filtered water
and maintain within the range of 6% to 10%. Blaser told us to use at least a 1% mix or higher on fillups and also to consider using an ultrasonic mixer, which seemed surprising but we will do it if this is necessary.
Blaser came right away when we reported this problem to them, and they checked our concentration of coolant that is 4.9% (just a bit low on concentration). This differed slightly from our measurement, so we are going to pay more attention to calibration of the refractometer.
It does get higher concentration when the coolant evaporates on our 80 gallon tank, so we try to stay within the range of 6% to 10% at all times and check it as we refill, but generally it goes to higher concentration when we get low level, but overall we are staying in the proper range of concentration.
They also checked our PH to be 7.9 which is within the acceptable range.
Blaser has taken lab samples of the coolant from the reservoir, and also our filtered makeup water, and we are expecting results from the lab soon. They did check our coolant about 6 months ago as it had turned from clear to yellow over time. At the time they said it was OK to keep running, but we figured 3 year run time was enough and we changed out to a new batch of coolant. The lab will also test for bacteria and other contamination that might be present and we will get a report soon.
We will replace and fix the wipers, but I am concerned about other seals and gaskets (so far no observed leaks anywhere) and still looking into what else may be affected. (If anyone has input on what other seals and gaskets to be aware of I am interested to know from experienced people, our service manager from the dealer was asked, but we did not really get feedback on other areas to monitor, so we will probably ask Doosan directly next)
We do see some paint lifting on some cast parts on the saddle as well, I can live with this, but wish it wasnt lifting
Any ones experience on this would be appreciated.
I am considering switching away from the Synergy 735 for this issue, but it would be great to know if anyone else has seen issues with degrading wipers or other plastic/gaskets. I understand wipers will need to be changed eventually, but how long should they last?
The Doosan has a grease cartridge lubrication(no way oil) and overall everything runs super clean
We do have an oil skimmer, and it always runs.
We dont cut anything except AL, Stainless 304 and some plastics and stock is clean/dry when we put it in
We never put any foreign chemical in the machine except a bit of mineral spirits to clean the table which we wipe off and this is minimal.
The wipers left a gummy sticky residue on the waycovers, and are brittle/pitted or missing in some areas on the waycover.
So Hennig agrees the material is showing "dissolution" and appears to be a chemical breakdown.
It would be appreciated to hear from anyone who uses Synergy 735 if you have seen similar issues.
Thanks,
Steve