BOSCH CSG15 5-Inch Concrete Surfacing Grinder

(10 customer reviews)


Material Plastic
Item Dimensions LxWxH 19.75 x 14.75 x 10.75 inches
Style Concrete Surfacing Grinder
Power Source Corded Electric

  • 12.5 amp power
  • New guard system
  • Four-stage dust intrusion seal
  • High torque to handle sustained loads



The BOSCH JA1007 Dust Extraction Kit allows for dust extraction and collection with BOSCH JS470E and JS470EB Jig Saws. Kit Includes: Clear Dust Hood (2605510293), Dust Tube (2605730055), and Vacuum Hose Adapter (VAC024).

From the manufacturer

What Is Crystalline Silica?

Silica, often referred to as quartz, is a very common mineral. It is found in many materials common on construction sites, including soil, sand, concrete, masonry, rock, granite, and landscaping materials. The dust created by cutting, grinding, drilling or otherwise disturbing these materials can contain crystalline silica particles. These dust particles are very small and invisible to the naked eye. When inhaled, even in very small amounts, silica dust can cause serious health hazards. Each exposure to silica adds to the lung damage.

What Is Silicosis?

Silicosis is a disabling, irreversible, and sometimes fatal lung disease. When a worker inhales crystalline silica, the lungs react by developing hard nodules and scarring around the trapped silica particles. If the nodules become too large, breathing becomes difficult and death can result. There is no cure for this disease, but it is 100% preventable.

Get Compliant

Whether you are concerned about the health of your employees, your health, compliance or increasing productivity, Bosch has developed PRO+GUARD protection systems. In order to move toward compliancy and protection, it is critical that every component in the system is designed to effectively remove dust. Bosch dust collection systems can reduce airborne dust, helping to create a safer and healthier working environment.

Protect Yourself & Others

The Occupational Safety and Health Administration (OSHA) has issued a final rule to curb lung cancer, silicosis, chronic obstructive pulmonary disease and kidney disease in Americaʼs workers by limiting their exposure to respirable crystalline silica. While using power tools with a dust attachment/ accessory and dust extractors with the right filter, exposure to silica can be drastically reduced. The new standard went into effect on June 23, 2016, and employers are required to comply with all obligations of the standard by June 23, 2017.

Additional information

Weight 6 kg
Dimensions 19.75 × 14.75 × 10.75 cm




Item Dimensions LxWxH

19.75 x 14.75 x 10.75 inches


Concrete Surfacing Grinder

Power Source




Part Number


Item Weight

6 Pounds

Product Dimensions

19.75 x 14.75 x 10.75 inches

Country of Origin


Item model number


Item Package Quantity


Included Components

Grinder Auxiliary Handle Flange Kit Spanner Wrench 5 In. Diamond Cup Wheel Carrying Case

Batteries Included


Batteries Required


Warranty Description

Limited 1 Year



Date First Available

March 17 2015



10 reviews for BOSCH CSG15 5-Inch Concrete Surfacing Grinder

  1. DCMAN

    An excellent tool which works as advertised when used properlyI recommend this tool because it grinds well and it does a good job collecting dust when used correctly.I used the Dry Diamond Cup Wheel which came with the tool.How to useTo maximize GSC15’s dust collection capability, here is what I did:Get ComfortableGet in a comfortable position allowing you to easily control the tool while remain relaxed. I used a 5-gallon bucket, turning it upside down. On top of the bucket, I placed a large folded towel. I then laid my chest on top of that. In this position, I didn’t need any muscular effort to continue grinding for long periods. Use knee pads to protect your knees.Protect Yourself and Your Home from Concrete Dust:Since I am a novice, I did the following to protect myself and my home from my newbie mistakes. I sealed the HVAC return registers. I turned off my home’s HVAC and its fan. I stapled polyethylene sheeting on every surface of the rooms I was going to grind. I wore a full-face respirator.Dust Extractor SetupI used the “OSHA Compatible Kit with HEPA Level Filtration and Cyclonic Dust Bags for Select 12 -16 Gal. Wet/Dry Shop Vacuums” setup on my Rigid dust extractor. That worked great.Connect the CSG15 to Dust ExtractorI could not find any resource which unambiguously stated what adapter would connect a CSG15 to a common Rigid wet/dry vacuum. Product pages on Home Depot, Amazon and Bosch all mention certain dimensions, as opposed to plainly stating something like ‘The GSG15 may be connected to a Rigid vacuum using the XYZ adapter’. Instead, each site mentions certain dimensions, without condescending to note where these dimensions are taken (inside or outside diameter). I managed to hack together something: one of the adapters in this set sort of worked: The 2-1/2″ to 1-7/8″ adapter is at least the right size. Unfortunately, it does not lock into the Bosch. I used aluminum foil tape to seal the connection: the GSC15Used as follows, it is easy to have good dust extraction:1. Connect the tool to your dust collection1. Get into a comfortable position. See above.2. Turn it on (using the slide on-off switch), locking it in the on position. See p. 10 of Operating and Safety Instructions.3. With the wheel now spinning, place the wheel on the concrete. Holding it with both hands slide it back and forth, keeping it flat. For my application I found the CGS15 required almost no down pressure; I simply nudged it gently back and forth. You might have to push down harder for harder and/or rougher concrete.If you are grinding a lot of concrete, take a break every now and then to make sure the cyclonic dust collection bag in your wet/dry vacuum has not filled up. When that bag becomes full, you will know almost instantly because the dust collection will suddenly become poor.Using the GSC15 Near Wall EdgesTo maximize dust extraction when grinding at wall edges, do this:1. Turn the CGS15 off. Slide the Guard Locking Device forward, move the movable part of the guard into position. See p. 10 of Operating and Safety Instructions.2. Turn the CGS15 on. Place the (now open part of the dust extraction guard) down at the wall edge. In other words: don’t start far away from the wall. Instead, lower the CGS15’s grinding wheel down on the concrete almost at the wall’s edge.3. With the GCS15 at the wall’s edge, move it to the right. I found as long as I always moved from left to right, the dust extraction remained very good. If I moved the opposite direction, more dust escaped.SummaryAn excellent tool which works as advertised when used properly.

  2. Timothy J. Campbell

    Great concrete grinder.We were grinding several thousand square feet with large grinders but I wanted something small to do small bathrooms and other places the big grinders can’t get. This Bosch worked great. Hooked a shop vac to it and went to work. Just wear earplugs when you use it. We love it.

  3. monie parker

    worth the moneyreally flexible . did not fit perfectly on my craftsman 16 gallon vacuum. little blue tape solved problem .

  4. Sanc33647

    Worth Every PennyI ordered this on 1/27/2020 at 15:00 hrs EST and Amazon delivered it on 1/28/2020 at 12:25 hrs EST. Spectacular delivery!The unit comes complete with a concrete grinding wheel, an integral dust collection shroud with a 1-1/2″ connection as well as extra shroud brushes and o-rings. The carrying case is the typical top quality Bosch case.I hooked it up to the RIGID shop vac I had available to me today and secured my 1-1/2″ hose to the dust collector with some duct tape and went to work.I knocked out about 75 square feet of thinset and out of level concrete in 25 minutes. My biggest problem was my own dust collection system. If you read a number of the other reviews you will note that several of them recommend a “dust deputy” ahead of the vacuum and that is in fact an excellent suggestion. I have two more phases of my project yet to do and both are larger. I will get the best dust collection system I can manage when I’m not under a time gun as I was today, and this tool will handle the job with ease.I’m truly amazed at how well this worked, and considering the value of my time this tool is/was worth every penny.

  5. Igor

    Good grinderGood grinder. I used it to grind high spots on concrete slab before laying laminate. One thing however keeps me from giving the grinder five stars:1. The wheel cup came off twice. Both times was when I powered off the grinder and lifted it from the floor waiting for the cup to stop spinning. Somehow that lets the lock nut become loose and come off with the wheel. I stopped lifting the grinder off the ground when I turn it off until the wheel stops and I have not had any more accidents. I am certain the lock nut was tightened securely before it came off both times.Also, the grinder tripped the circuit breaker in my house 4 -5 times during one day use. Every time that happened, I was pushing on the grinder a little harder. Can’t hold that against the grinder though, 12.5 Amps and a large shop vac plugged in the same circuit is fairly close to the limit.I feel the grinder was a little expensive but worked very well, no dust.

  6. hiplip

    Recurring FailuresThe first tool I received was incredibly loud. It could not be turned on without ear protection. I measured more than 120dBA at a distance of 1 meter with no load.I got a replacement unit from Amazon. The replacement unit had clearly been returned. The seal on the box was broken, the box flaps did not have the stiffness of a new box, and the cord was tied up with a piece of string (!). This tool was also very noisy. It measured 102dBA at a distance of 1 meter – still much too loud to use.I called Bosch about the failures and was told that this was the first they had heard of it. I noted that the serial numbers of the two tools were different only by 500, so it could be a bad production run with all the tools having the same problem.Next the Bosch agent transferred me to an Amazon agent. I told the representative that there was a problem with this tool model since I had received two of them with the same problem. I also noted that the second tool had been returned before. The representative was extremely nice, and refunded the cost of the tool to my credit card. Interestingly, the rep. told me to dispose of the tool instead of sending it back.My Bosch tools up to this point have been very satisfactory. So this is not typical of Bosch tools. I will buy Bosch tools again – but not this particular model.

  7. Karsten

    Its a nice 16ft hose that should actually be standard with a vac for professionals.This hose is a little bit more rugged than the short standard hose that came with the VAC090AH, but it is at least, if not more flexible than the standard hose.I’m using it in the shop and the standard 10ft hose is simply too short if you have powertools (I.E. ROS or Sheet sander) attached and dont want to literally sit on the vac. The hose has the same diameter as the non-antistatic hose that came with the vac. Performance wise, the Vac dont seem to care about the longer hose, I dont notice any difference in sucktion. If there is any, then its so minor that you need measuring equipment to detect it.P.S. I hope Bosch makes this hose standard for the Vac’s. I wouldnt say a word if the VAC was a green Bosch, but we’re talking about Bosch Pro tools.

  8. Tom Lyden

    Good Grinder, Terrible ErgonomicsI bought this to do some leveling in my basement in preparation to lay down a floating floor. I also bought the suggested vacuum hose which connected it to my VacMaster very well. The machine is powerful and chopped up the high points on my floor very well. In an hour of grinding or less, I filled three VacMaster bags.My big issue with this machine is the power switch. Where it is mounted on the side of the motor housing is not optimal and it needs (in my opinion) a thumb tab to hold it down instead of “friction” grip. I cannot believe Bosch did not test this and get it right.So Hold on tighter than you should have to and grind away.

  9. John

    Good Hose – Small ID – slight loss of suction.this looks like a high quality german hose. however the ID is smaller than the non-anti-static hose. enough to notice a loss in suction. the hose is also THIN – watch out if you are working on job-sites, people can step on it and jack it up. the ends are quite nice – the vac side is the proprietary bosch config. the suck side is the festool kind – basically interchangeablethe static hose is even thinner – but has a larger ID. they have the same rubbery festool end.I ended up getting two mr nozzle hoses. they are more incompressible and larger, they provide the most suction. they are also much tougher. you can stand on them all day without breaking them. and the ID is larger for more suction. the 1.5 inch ID is great for sanders and your track saw, etc. the 2 inch ID hose is BIG. great for demo work and large pieces that a bosch hose would get clogged by.Mr. Nozzle is made in Riverside California. ++USAdownside – not anti-static. bummer.

  10. Tom

    You get what you pay for…Have used this product for 4 months now. I have a wood flooring company and have to tear out ceramic tile at least once a week to install wood floors. Use a chipper to remove tile and then hit the thin set with this grinder and it has all the power you will need. Purchased a dewalt grinder before this and it lasted one job before it started smoking. You get what you pay for when it comes to quality tools you can use everyday.

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