Established in the year 2011 under multidisciplinary committee of SSGBCOET Bhusawal, Blanka Botz has grown to be one of the major Teams in the Robotics Field which are into production of manual and autonomous machines with a purpose of serving different sectors including domestic, defence and commercial. A leader in its areas of business, the Group has expanded in a Design, Manufacturing and construction of robots. It also includes operations and applications of designed robots.



Type:  Undercutter– Featherweight
Weight:  15 kg
Year of creation: 2018


“Sambhaji” was the eldest son of Shivaji&the founder of the Maratha Empire. A Tribute to a True Legend Sambhaji Bhosale (14 May 1657 – 11 March 1689). He was the second ruler of the Maratha kingdom. He was successor of the realm after his father’s death, and ruled it for nine years.

The Robot is Inspired from many of the Undercutter Robots in Combat robotics. Sambhaji was created with the objective of facing the ramps of its category 15kg. The robot was designed to be “undercutter”, that is, to have its bar close to the ground.

Its first carcass consisted of just one piece, “unibody”, made of Aluminium 6061 T6, but the material was not resistant enough to support the robot’s weapon, and it warped before its first competition. The robot was redesigned and its housing, still “unibody”, was made UHMW Material.

For locomotion we use “planetary” reduction B-Box 15 with Brushless Drive Setup. Its bar is made in EN 31, and has different Bars as per the Opponent.

Robot Name Sambhaji
Year of creation 2019
Robot Weight category 15kg
Robot Type Undercutter
Robot Dimensions (L*B*H) mm 450mm x 200 mm x 115mm
Material used in robot alluminium 6061 T6, UHMW, EN31,
Drive Motors NTM Propdrive 4238 740kv @24v
ESC Used for Drive 100 Amp simonk flashed from Rompot store
Drive Gearbox Ratio 20:1 (BBOX 15 Gearbox)
Drive motors RPM After Reduction 888 Rpm
Wheel Size 5 inch
Theoretical Top speed of robot 19.3 MPH
Weapon Motor Turnigy Aerodrive 6364 245kv @24v
ESC Used for weapon Redbrick 200amp
Weapon Pulley Ratio 1:1
Weapon RPM at max 5880
Weapon Material &
Hardening (HRC)
EN24 Tool steel Hardened at 46 HRC
Weapon Weight 1.8kg
Weapon Shaft Diameter 25mm
Bearing Used in Weapon SKF 32005 X /Q
Thickness of Top Plate 3mm
Thickness of Base Plate 8 mm UHMW
Chassis Material UHMW
Armor Attachments
Kill switch
Battrey Used & Specs of Battrey
6s 1300mah 120c (3 pcs parrallel combination for drive and weapon)
Robot Exact weight with highest weight attachment.. 11.8kg
Machining cost with Material and without eletronics 38k
Top achievements Participate in Bits pillani Goa 2019

Gallery : Sambhaji

Videos :Sambhaji (Coming Soon)