Aggregate Equipment · Make & Model reference
Yanmar B7-6 Sigma
The Sigma boom provides unparalleled maneuverability in very tight spaces, making it a specialty machine.
Operating weight
18,485 lbs
Horsepower
59.9 hp
Fuel burn
1.8 - 3.0 gph
Years produced
2016 - present
AI-updated · Last refresh 7/19/2026
Full specifications
Digging depth15 ft 4 in
Max reach at ground level24 ft 9 in
Bucket digging force15,873 lbf
Travel speed (high)3.0 mph
Shipping dimensions
Length18 ft 8 in
Width7 ft 6 in
Height8 ft 7 in
Weight18,485 lbs
Use these for permit routing and lowboy selection.
Recent auction history
| Year range | Hours | Avg | Low | High |
|---|---|---|---|---|
| 2020-2022 | 700-1,400 | $68,000 | $61,000 | $75,000 |
| 2017-2019 | 2,000-3,500 | $55,000 | $48,000 | $63,000 |
AI price estimate
Excellent, low hours
2022 model year
$80,000
Good, avg hours
2020 model year
$65,000
Fair, high hours
2018 model year
$50,000
Common problems to check
- Joystick control issues
- Hydraulic pump noise
- Track component wear
Why buyers pick it
- Unique Sigma boom offering tight turning radius
- Excellent stability
- Spacious cab
- Strong lifting capacity
Best jobs for this machine
Civil engineering projectsRoadside excavationDemolition in confined areasFoundation work
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