Product ModelErgo 3
Nominal seat width (mm/in)*410 / 16460 / 18510 / 20410 / 16460 / 18510 / 20410 / 16460 / 18510 / 20
Nominal seat depth (mm/in)**430 / 17430 / 17430 / 17430 / 17430 / 17430 / 17430 / 17430 / 17430 / 17
Front caster / Rear wheel size (in)6 / 14
7 / 14
6 / 14
7 / 14
6 / 14
7 / 14
6 / 20
7 / 20
6 / 20
7 / 20
6 / 20
7 / 20
7 / 247 / 247 / 24
Backrest height (mm)435435435435435435435435435
Headrest height above seat (mm)N/AN/AN/AN/AN/AN/AN/AN/AN/A
Armrest to seat distance (mm)220220220220220220220220220
Front location of armrest structure (mm)360360360360360360360360360
Seat surface height at front edge (mm)435
485
435
485
435
485
435
485
435
485
435
485
435
485
435
485
435
485
Footrest to seat distance (mm)335 ~ 435335 ~ 435335 ~ 435335 ~ 435335 ~ 435335 ~ 435335 ~ 435335 ~ 435335 ~ 435
Effective seat width (mm)420470520420470520420470520
Effective seat depth (mm)430430430430430430435435435
Seat plane angle (X°)666666666
Backrest angle (X°)202020202020202020
Seat to backrest angle (X°)102102102102102102102102102
Leg to seat angle (X°)110110110110110110110110110
Overall length with legrest (mm)1050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 10801050 ~ 1080
Overall width (mm)580630680600650700600650700
Overall height (mm)865
915
865
915
865
915
865
915
865
915
865
915
865
915
865
915
865
915
Folded length (mm)710710710760760760800800800
Folded width (mm)310310310330330330330330330
Folded height (mm)690
740
690
740
710
760
690
740
690
740
710
760
690
740
690
740
710
760
Total mass (kg)11.412.412.712.413.413.712.913.914.2
Mass of the heaviest part (kg)7.9 (14Q)
10 (14F)
8.6 (14Q)
10.7 (14F)
8.9 (14Q)
11 (14F)
7.9 (20Q)
11 (20F)
8.6 (20Q)
11.7 (20F)
8.9 (20Q)
12 (20F)
7.9 (24Q)
11.5 (24F)
8.6 (24Q)
12.2 (24F)
8.9 (24Q)
12.5 (24F)
Maximum user weight (kg)115115115115 / 125115 / 125115 / 125115 / 125115 / 125115 / 125
Minimum turning radius (mm)900 ~ 925900 ~ 925900 ~ 925900 ~ 925900 ~ 925900 ~ 925900 ~ 925900 ~ 925900 ~ 925
Minimum turning radius without user (mm)780 ~ 800780 ~ 800780 ~ 800780 ~ 800780 ~ 800780 ~ 800780 ~ 800780 ~ 800780 ~ 800
Pivot width (mm)1000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 12201000 ~ 1220
Static stability downhill (X°)141414141414141414
Static stability uphill (X°)141414141414141414
Static stability sideways (X°)151515151515151515
Handrim diameter (mm)N/AN/AN/A430430430520520520
Horizontal location of axle (mm)404040303030202020

* Nominal seat width is measured the width of seat cushion at 120mm in front of the backrest. This value is mainly used in the product ordering process.
** Nominal seat depth is measured from the front end of the seat cushion to the back cushion. This value is mainly used in the product ordering process.
– The actual product specifications differ from the data in the table by ±1 cm ±0.5 kg.
– The actual product specifications may vary according to different configurations.
– Karma reserves the right to modify information herein without further notice.

Manual Wheelchair Measurement Method
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