I need to install just ADB on customer´s PC to connect to android phone and install apk there. And because of SDK size is it possible to do it without installing whole SDK?
Yes you can
- Firstly, you'll need a program that can partially download contents of zip files from the internet.
- Once that's set up, go to the SDK download page and grab the link to the SDK.
- In the zip file, navigate to "android-sdk-windows\tools"
- From there, select only "adb.exe", "AdbWinApi.dll" and "AdbWinUsbApi.dll"
- Download.
Source: http://twigstechtips.blogspot.in/2011/07/android-downloading-adb-without-sdk.html