J&M 220 Operating And Maintenance Manual - page 13
MODEL 220
HYDRAULIC
IMPACT HAMMER
I.
GENERAL INFORMATION
C.
SPECIFICATIONS
Working Specifications
Designation J&M
Model
220
Maximum stroke
4'-0" (1.2 Meter)
Rated energy @ maximum stroke
88,000 ft-lbs (119kj)
Blow rate @ maximum stroke
45 bpm
Minimum stroke
1' (0.3 Meter)
Rated energy @ minimum stroke
11,500 ft-lbs (15 kN-m)
Blow rate @ minimum stroke
75 bpm
Weights and Dimensions
Ram weight
22,000 lbs (5,215 kg)
Hammer weight (bare)*
35,000 lbs (8,573 kg)*
Complete operating weight with cap*,**
41395 lbs (18776 kg)**
Length (bare)**
121-0" (6401mm)
Complete operating length with cap**
23'-7” (7188mm)**
Width (without guides)
32" (660 mm)
Depth 48"
(1219mm)
Depth centerline to back
18" (457 mm)
Depth centerline to front
18" (457 mm)
Hydraulic hose length (standard)
150' (45 m)
*Weight includes one half of hydraulic hoses.
**Set up for 26" leads and 14" square concrete pile.
Power Unit
Designation J&M
Model
325
Engine CAT
3306TA
Max. power
335 HP (250kW)
Operating speed
2100 rpm
Max. drive pressure
5,000 psi (345 bar)
Drive flow
87 gpm (330 lpm)
Stroke control pressure
4,300 psi (295 bar)
Stroke control flow
5.2 gpm (20 lpm)
Weight
9,600 lbs (4355 kg)*
Length
126" (320 cm)
Width
60" (152 cm)
Height
75.5" (192 cm)
I-5