Need a Quote? Call now 1.800.503.9717

Simulate a Robotic System ROI or request our Robotic Welding Application Analysis. 

Payload 4kg | Reach 2008mm | Axes 6

OTC FD-B6L arc-welding robot utilizes a streamlined, through-arm coaxial cable, which gives you maximum mobility in tight work spaces.  This compact design makes welding in confined spaces or complicated fixtures a snap.

The FD-B6L’s streamlined coaxial cable improves wire feeding, giving you better overall weld quality.


• Through-arm cable design improves torch reach & wire feeding

• Offers a wide working range with an independently articulated arm

• Seamless digital connection with all OTC Daihen brand welding power supplies

• Improved vibration restraining control provides smooth robot movement

• Built-in mechanical shock sensor

• Single source technology – all components are manufactured by OTC Daihen.

• Highly versatile design supports most welding applications


• Windows XP based open architecture

• Large memory capacity and 40 Input / 40 Output control signals

• Advanced PLC functions allow for ladder diagram editing directly through the teach pendant

• Network capabilities – connects to Ethernet, DeviceNet, and PROFIBUS connections (may require additional hardware)

• Improved Specification for severe condition such as high-humidity & high-temperature


• Icon displays assist in quick & easy teaching

• 640×480 VGA color screen with LED backlight 65536 color display

• 3 position enable switch provides increased safety

• Multi-screen function allows user to view up to 4 screens simultaneously

• On-screen help function with complete instruction manuals

• Standard touch screen display with jog dial operation

Specification Value
Number of Axes 6
Maximum Payload Capacity 8.8 lbs (4 kg)
Positional Repeatability ±0.003" (± 0.08 mm) (Note 1)
Horizontal Reach 79.06" (2008 mm)
Vertical Reach 138.75" (3575 mm)
Drive Capacity 4650 W
Working Range, Arm, J1 (Rotation) ±170 ° (±50°) (Note 2)
Working Range, Arm, J2 (Lower Arm) -155 ° to +100° (Note 3)
Working Range, Arm, J3 (Upper Arm) -170° to + 190°
Working Range, Wrist, J4 (Swing) ±155°
Working Range, Wrist, J5 (Bending) -45° to + 225° (Note 5)
Working Range, Wrist, J6 (Twist) ±205 ° (Note 5)
Maximum Velocity, Arm, J1 (Rotation) 3.40 rad/s (195°/s) [3.05 rad/s (175°/s)] (Note 2)
Maximum Velocity, Arm, J2 (Lower Arm) 3.49 rad/s (200°/s)
Maximum Velocity, Arm, J3 (Upper Arm) 3.49 rad/s (200°/s)
Maximum Velocity, Wrist, J4 (Swing) 7.33 rad/s (420°/s)
Maximum Velocity, Wrist, J5 (Bending) 7.33 rad/s (420°/s)
Maximum Velocity, Wrist, J6 (Twist) 10.5 rad/s (600°/s)
Wrist Load, Allowable Moment, J4 (Swing) 10.1 N⋅m
Wrist Load, Allowable Moment, J5 (Bending) 10.1 N⋅m
Wrist Load, Allowable Moment, J6 (Twist) 2.94 N⋅m
Wrist Load, Allowable Moment of Inertia, J4 (Swing) 0.38 kg⋅m²
Wrist Load, Allowable Moment of Inertia, J5 (Bending) 0.38 kg⋅m²
Wrist Load, Allowable Moment of Inertia, J6 (Twist) 0.03 kg⋅m²
Arm operation cross-sectional area 6.37 m² x 340°
Environmental Conditions 32 to 113º F (0 to 45 °C), 20 ~ 80% RH
Mass 611 lbs. (277 kg)
Upper arm payload capacity 44.09 lbs. 20 kg (Note 6)
Installation type Floor / Ceiling / Wall
Paint color White (Munsell notation 10GY 9/1)