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cat it’s Maximus here this time talking about the Makita 6402 heavy duty or professional series 38 drill not a very common mikita drill I believe this is the first YouTube video specifically about the 642 let’s get through this so I can watch Beach Bum here although I think this is a movie that Brad Pit probably should have done rather than Matthew mccon we’ll see how it turns out so anyway the 640 too I’ve done videos about 38 Makita Carpenters drills around 1,000 RPM the model 6510 I think I did a video about a 6510 lvr those are the common mid-speed 38 drills many times or I should say back in the it really started in the 80s but really progressing through the 90s is that 38 drills tended to be more reserved for higher speed operations 2,000 or the real standards 2500 rpm there’s so many Hitachi and DeWalt Etc uh even Makita drills that 38 capacity that are around 2500 rpm because that seems to be where The Sweet Spot is both in power and speed but for a long time there were what’s known as Carpenters drills which were lower speed increased power 3 drills you didn’t have all the weight of halfin drills you didn’t quite need the torque or the EXT extreme low RPM 500 600 Etc RPMs so they had many manufacturers had these mid RPM 38 drills this happens to be 1200 RPM Milwaukee the trip o 222 or 1,000 RPM the Walt had theirs which was really Stout with the 6.7 amp motor the 42 amp Porter cables even Craftsman’s many other manufacturers this caught my I found this at a garage sale I think at one point it did have a belt clip we can see the recess here and the provision for it little uh sheet metal so that is unfortunately missing otherwise this is in great shape and it just seems apparent somebody didn’t like the belt clip and just pulled it off looks a lot like the 6302 and the metal gearbox version 6302h pistol grip halfin drills from Makita except for you notice that there isn’t a provision for a side handle here but it’s the same kind of body style as the half-in drill it’s just geared a little bit higher doesn’t have quite a SLE motor 5.2 amps rather than like 6.3 or 6.5 this was built in 1995 it is one of the famous Buford Georgia tools worst case or I shouldn’t say worst case but in this case as in many with Makita tools there’s this era where Makita decide to do their own Jacob’s Chucks the big drawback is they did it to like a metric sizing so the Chuck keys on these makitas that actually have the Makita brand or stamp Chuck actually take special keys that are like I I just call metric keys that aren’t compatible with traditional Jacobs truck keys and can make replacing a Chuck key a little bit of a task can see the red wire on this one so the cord is definit been extended probably when the belt clip was removed versus the 6510 which is like a 3.5 amp drill and I think about 1,000 RPM this is just offers a little bit more speed and significantly more power at the same time for doing General carpentry tasks whether you’re running like 1in augers you’re running smaller hole saws uh installing lock sets doing some general purpose driving as as well as offering enough speed to be able to drill Steels and metals that was the whole per purpose of these drills it’s just that most people they just wanted a basic you know higher speed 3/8 drill or if they need something heavy duty they just went with a half inch and so that’s why with so many manufacturers it is just it’s the most the rarest the most uncommon models are these mid RPM 3 drills I mean I will give them credit sure does sound pretty nice this has had a relatively light amount of use fiberglass reinforced polycarbonate body I guess the biggest aila’s heel with so many of these Makita tools is that uh lower noise level from the fan people really liked how that’s achieved is by having these little slats here and it breaks up some of the turbulence coming off the tip the the blade tips on the integrated fan although under heavy use you’re getting a lot of sawas through a lot of people have had problems with sawas getting clogged in the because this is acting like just a fine mesh or screen and just gets clogged with sawada so you got to take it apart and periodically blow this out and a lot of people when they if they have one of these where it’s gotten clogged up enough for you noticed that there it’s getting real hot and there is an air coming through they just take little like wire clippers and they actually just trim all these little fingers and just make it an open slot so it can blow the dust out so even though this design makes it quiet relatively quiet it’s also prone once again to clogging no metal gear box on this but once again still pretty good pretty solid material the one issue with fiberglass reinforced polycarbonate which is it’s a bit more brittle than and why it’s a bit more brittle and a bit more expensive than nylon it is a tougher harder stronger plastic but it just has a it’s just a little bit less compliant and that’s why fiberglass reinforced nylon has become essentially uh the standard even modern Makita drills have moved away from the polycarbonate for the nylon one other disappointment that like the Walts use a halfin spindle this is a thread 38 24 so which is fine it’s the standard to have a 3/8 spindle on a 38 drill but this being the 6402 and the heavy duty or professional series 38 drill would have been nice to see a half inch spindle against the 38 truck that way when you’re using longer augur bits and you’re in certain situations where it’s putting a lot of strain on the spindle as well as just situations like dropping it it’s going to less be less likely get bent or broken and it is something I’ve read about particularly with the Milwaukee since they had the most popular with the 0222 and the O uh 221s they sold enough of them where I was able to read reports of people had some issues like I said with long augur bits they get jammed you put a lot of strain and end up bending the spindles one thing we’ll notice in here and initially you would think well the Chuck lock screw is missing but this was the beginning of the era for Maka where they sto using Chuck lock screws instead of drilling a big hole through the spindle they don’t so there is a little bit more material in the spindle but what’s annoying is that they just torque at the factory they torque the chuck on really tight with more torque than they think it would ever require or I guess whatever require whatever the drill could produce to cause it to accidentally unscrew when you’re doing heavy duty reverse operations which also has a another caveat which makes it difficult to remove when you’ll want to swap out the Chuck and that’s probably once again the biggest disappointment of what is the best 38 quarter drill I think Makita ever made I’m always needing a flashlight we’re doing this just to see the quality of the commutator we can tell by the outside of this drill that it hasn’t had many hours and we can see that this commutator is there’s like nowhere there isn’t any big Groove worn in by the brushes this thing is really ready to go one thing about these Makita drills is many of them have really kind of stubby brushes and it’s always been a little bit puzzling why Makita would put in such short brushes but I think their brush uh carbon brushes and brush tools isn’t just a you know a compress press pile of carbon there’s a specific recipe of all sorts of little things they put into them I think makita’s brushes are just a bit harder we can see that there’s actually quite a bit of extension sticking out so we know that this brush actually has quite a bit of life left in it particularly considering this stubby little nature the other odd thing is Makita uses these kind of spade terminal connectors right on the brushes which is fine but they use big insulated ones which are a little bit bulky and totally unnecessary of course we can see that this is the era where uh manufacturer had learned that you don’t really need to put tons of epoxy around Motors and Fields to make them reliable folded uh contacts on the commutator just a real bog standard motor just well balanced very smooth also the arrow Mita use separate reverse switches which is kind of nice because this is a like indust I wouldn’t say industrial it’s just a standard size switch that can be replaced with any of a variety of Manufacturers we do have a genuine americanmade eaten um variable speed trigger there’s a little circuit for the variable speed and it is external on a little heat sink to help uh prevent it from getting burned up is older using the nut nut and bolt style or uh retention which is always nice to see just because it tends to be more reliable over the long term if you have a tool for a long time and repeatedly serviced versus having it thread in the plastic you get a bit more reliability but you do need to be careful because a lot of people I shouldn’t say a lot of people some people it’s a nut and bolt so they really wrench down when they uh reassemble stuff and you have to be careful if you wrench down too much you’ll actually pull the nut right through the plastic totally ruining it let’s take a look at these gears here we are so on the 6510 the smaller I guess less powerful version of their 38 Carpenters drill it’s only half rolling bearing this gear case I can already tell there we go finally got it out this is going to be very similar to The 6302h Heavy Duty version Makita Makita has high engineered tools and I think part of the competitiveness and the fact that a lot of their tools were based in Japan even though this is an americanmade unit they would make what I would say calculated Corner cutting on this channel I’ve taken apart a heck of a lot of drills so many of them it’s just all rolling bearings ball needle bearings Makita does this thing like on this since it’s a heavy duty version it’s almost we’ve got bearings on both sides of the motor we’ve got a ball bearing a big one here at the front of the Chuck this idler gear here has obviously ball bearings but right here at the slow the back of the spindle where it’s spinning pretty slow they just said it’s it is moving slow it’s honestly a highly diminishing returns to put a rolling needle bearing there and so they just use a sleeve bearing and save a few cents where companies especially like Milwaukee Milwaukee power tools they use rolling bearings pretty much everywhere where they could use one not necessarily would it be or I should say sometimes they use rolling bearings in places where it really doesn’t matter where Makita actually says you know that one spot like on the back of the spindle where it’s geared down and running slower it really doesn’t matter uh there’s very little additional friction or play and so that’s what Makita does but it once again it’s still satisfying seeing all ball needle bearings and this thing out of six areas where it could have rolling elements five of them are rolling we can see this grease is getting a little bit old Makita doesn’t put in a ton of Grease they do this thing where the gearbox is kind of isolated off it makes it have a smaller compartment for a gear reserve of course so many tools once again I’ll point out Milwaukee and their obscene amount of it’s a gree but many tools they won’t have this diaphragm and there’ll just be a ton of grease in the gearbox gives it a big long grease is a gel with oil mixed into it is the easiest way to stay it many manufactures put a big glob so there’s just a big reserve of that oil this it’s much smaller so this is a tool that you would peer you would need to more often you need to service obviously we can see the first input stage or the first reduction is indeed Hilo cut and this is a really common around so many manufacturers and it’s just fine you don’t always have to have all helico cut gears swinging back circling back around the Milwaukee which usually does helico cut all the gears on all the stages it’s really not necessary straight cut gears can be a little bit no more noisy so they tend to avoid them on the higher speed side where the motor is so this is helical cut on the first stage to reduce noise and then it’s going to be straight cut on the second stage because it’s just not moving as fast it makes it a little little bit cheaper to manufacture but only slightly it’s you know it’s kind of an industry standard to do this wrong many many very good manufacturers such as Porter cables old heavy duty block IND Deckers Etc and I always talk about gearbox alignment it’s something that Makita failed on their DP 4000 series gills that would be the DP 4000 40001 40002 is they didn’t put something like this see we have a little protrusion here let’s it’s in a little recess so when I reassemble this gearbox these two halves stay in proper alignment obviously if this is twisting back and forth relative to the diaphragm is going to cause the angle of the gears to shift and cause them to really blow out gears really need to be precisely lined to really last a long time when they start getting it on in an angle you’re causing a whole bunch of pressure on just one portion of the tooth and it just can really accelerate wear might as well do our oblig atory 1in spade bit uh little demonstration here which would be obviously no issue with this [Music] and that’s really the purpose that’s why they’re known as professional 3H drills is because when you’re using more moderate size bits like a one in speed bit a lot of drills can drive without a problem in the old D into old can drive in the old dry Pine but as you can see how fast I was drilling that hole I was putting a lot of body weight into it and so it’s like the push comes to sub when you’re really doing heavy duty tasks or really pushing harder using long augur bits where there’s a lot of friction from a deep hole that’s why these more professional great Carpenters drills existed it’s because standard ones would just end up getting burned up they just didn’t have quite the power this one 5.2 amps at 1200 RPM is right at the limit where you might want a side handle if you’re not really and you can because there is a smooth area here but this is right at the point where if you’re not really paying attention the spade bit you know breaking through if it gets caught it can pull itself out of your hands it’s actually a pretty stout 38 drill if you’re paying attention then it won’t pull itself out of your hands but if you’re not it certainly has the ability to do so there you have a long Blobby video about the Makita 6402 their true Pro Series 38 heavy duty drill and it still is built pretty nice compared to the 6 510 which has sleeve bearings on The Idler gear this is upgraded to ball bearings on both sides of the idler gear so it is Better Built than their smaller unit and then the big difference is the smaller unit has a 3 and 1/2 amp motor this has a 5.2 which is what like 40% 50% more power and once again not many people are buying this drill because for the price that’s the other issue is that these Pro 3 drills were real close to the prices of the half inch and people just say you know I’ll get the half inch because it will do more when I need a powerful drill and I’ll just stick with my current 38 one so you just don’t run into these mid RPM real pro model 38 drills and so I was pretty stoked I remember I saw this on the table and I thought oh there’s a Makita 6302 and I actually have one of those and the h metal gearbox version actually the while in Milwaukee I think think both still do make 1200 RPM uh 3/8 quarted drills they like a couple of the very last few of them that do but this Makita definitely is pretty cool and shows you should take just another quick look because you may end up with you may think it’s just a more common Makita 38 drill which there are many of their smaller ones are sold but take another quick look and you’ll say oh wow this is a 38 drill that’s more in a/2 in drills body and these are the ones that you really want these are the Stout 38 drills that are like near 1/ in power in a 3/8 drill anyway pretty stoked to have found this this is the only one of these I’ve ever seen in the wild I’ve actually seen several of the 6302 halfin drills many many of the smaller 3H drills which I think I have an example of just about every style the 2500 rpm M ones the th000 RPM ones but never seen the 6402 just because I’m sure this drill even back a 95 was probably like an 80 or $100 unit it’s probably just so expensive that people just said you know anybody outside of like construction companies and service would be able to justify really the price anyway thanks for watching …
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