PBD40 is not a precision bench drill

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Hello to Bosch Product Dev. Team.

The PBD40 is suppose to be an absolutely precision tool, but this is false.

When the drill is turned off and the drill motor housing is locked on the bench drill column, the motor housing still wobbles on the drill column. You can test this by using your hand to move the drill motor housing left and right. You will see that this is a big problem when attempting to drill with pinpoint accuracy into thick steel or wood. Bosch will need to redesign the drill motor housing and column so that it is has absolutely no wobble when it is locked in place. Bosch must provide adjustment screws on the drill housing and/or bench drill column so that the wobble can be eliminated before drilling. Also, this bench drill needs to have the left/right and forward/back 45degree tilt/ adjustment so the workpiece material can be made square to the drill bit. This speeds up drilling into thick metal and wood where an absolutely precision straight hole is required for threading for inserting bolts.

When will Bosch fix these things and release a new bench drill model ? Possibly a heavy duty Bosch professional bench drill ?

Thankyou.

This post was edited by phila on 08.04.2016, 10:26 o’clock
Reason: more information added.

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Hi mate.

I can pass this to the DIY division for you. I cannot comment as I only use and talk about the Bosch professional range of Powertools here.
 
Bob
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Phila.

I should have added that there are not any plans to bring out a Professional bench drill equivalent.

Bob
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Hi,
I had same precision problems with PBD40 used in combination with Proxxon KT150. You can drastically reduce chuck wobble by changing 6002 2RS ball bearing installed just above the chuck. Original ball bearing has excessive internal clearence, you should use tighest ball bearing available, e.g. CM. I can now achieve accuracy that is thought to be impossible for this compact well build machine.
Best Regards.
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OK, so I know the original posts in this thread are quite old now but seriously, who when requiring "absolute precision" looks to buy a Bosch green tool? I don't say that to sound snobbish as I've said here many times that, for most peoples requirements, Bosch green tools are more than adequate. But look, it doesn't matter that the marketing bumf for the PBD 40 has phrases like "for the utmost accuracy" in it as this is completely negated by being preceded by "The PBD 40 is a bench drill for DIY'ers". 
About a decade ago I did a HNC in mechanical engineering to improve the scope of my work. The drill presses and mills at the college were fairly entry level but nonetheless offering absolute precision. The cheapest drill press there was 1500 quid - that's entry level at the "absolute precision" end of the market. 
So again, if you require "absolute precision", why plump for a 250 quid DIY tool and expect it to deliver?
I don't mind the PBD 40 for woodwork. It's accurate enough for most tasks. If you need a tilting table, this is something that can be added as an aftermarket. My main issue with it is I've sometimes found it a little underpowered. 
I'm sure a more precise (bearings/shaft), more torquee blue version of this drill would go down a storm. 
Nice advice from dr1l there. I do love an aftermarket hack/upgrade. I might look to doing that to mine in the future.
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You can drastically reduce chuck wobble by changing 6002 2RS ball bearing installed just above the chuck. 

You mind sharing exactly what bearing (make/modell, perhaps a link) you replaced it with? Is it complicated to do?
Thanks in advance!


 
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Following is the link for NSK 6002 DDU CM ball bearing:
https://www.amazon.com/NSK-6002DDUCM-Single-Groove-Bearing/dp/B00RW7CVUG
CM stands for "internal claerance for electric motors"  Since chuck is supported by single bearing, wobble is directly propotional to the internal clearence of the ball bearing. I have seen no negative side effect of using a tighter ball bearing than the original. 

I have attached some photos taken during the operation. They were taken just to make re-assembly easy for me. Change is not very complicated, but only recommend doing it if you have previous experience in repairing similar equipment.

This post was edited by dr1l on 23.07.2020, 23:14 o’clock
Reason: Removal of redundant images

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hello. 
I have a small/big problem with bosch pb40. When running slowly it makes a noise. where should i put oil?
Thanks
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created by dr1l on 23.07.2020, 23:12 o’clock
Following is the link for NSK 6002 DDU CM ball bearing:
https://www.amazon.com/NSK-6002DDUCM-Single-Groove-Bearing/dp/B00RW7CVUG
CM stands for "internal claerance for electric motors"  Since chuck is supported by single bearing, wobble is directly propotional to the internal clearence of the ball bearing. I have seen no negative side effect of using a tighter ball bearing than the original. 

I have attached some photos taken during the operation. They were taken just to make re-assembly easy for me. Change is not very complicated, but only recommend doing it if you have previous experience in repairing similar equipment.

Do you really need to take it all apart? I can see the bearing above the chuck without opening the machine? Seems that I just have to remove a tension ring to get it out? 
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No, removing the ring didn't do it alone (of course, what was I thinking?).
So I will disassemble the gear house and with the ring removed I guess I should just knock the shaft out downwards?