BREAKERS from 75 to 5.220 kg FOR MACHINE CLASSES from 0,7 to 70 tonnes
JTHB
SERIES
HYDRAULIC BREAKERS
JTHB
HYDRAULIC BREAKERS
JTHB SERIES Komatsu’s JTHB breakers deliver exceptional impact energy, long lifetimes and low operating costs. What’s more, they minimise operator fatigue and environmental impact. These unique benefits are all due to an innovative blend of a simple yet efficient design and advanced ‘accumulator-free’ technology. With a complete range of 15 breakers all based on the same design philosophy, JTHB breakers are ideal for applications from construction and demolition to recycling, mining and quarrying.
Innovative features, real benefits Benefits
2
Features
High impact energy and productivity
• Dual power source combines hydraulic and gas energy • Recoil energy is absorbed and recycled for the next blow
Reduced operating costs and maintenance
• Up to 30% fewer parts • More durable components • No rubber bladder-type accumulator
Maximum reliability
• Only 2 moving parts (piston and control valve) • Built-in dust protection system
Less vibration and noise
• Short tie rods with vibration-reducing vulcanised rubber sleeves • Protected threads
Less stress on the machine and operator
• Gas cushion absorbs piston recoil to reduce vibration
Extended lifetime
• Automatic greasing system (option)
Versatility
• Extensive range of breaker tools • Kits for special applications
Environmentally friendly
• Noise-reducing breaker brackets
Reduced downtime
• Fast service and repair through Komatsu’s worldwide network
Fits any excavator
• Low sensitivity to back pressures
Safe investment
• Komatsu is a stable and reliable partner
HYDRAULIC BREAKERS
JTHB
Short tie rods with protected threads boost lifetime and reliability
Nitrogen gas cuhion absorbs piston recoil and recycles the energy for the next blow
Optional auto-grease system cuts service time and requires no external power source Large piston mass and support area for optimal piston alignment, energy transfer and efficiency
Simple control valve minimises oil flow interruptions and hydraulic pulsations
Provision for underwater kit included as standard
50/50 piston-tool weight ratio for greater energy transfer and less recoil
Dual retainer pins ensure correct alignment and easy replacement of tool
Specially hardened alloy increases durability and range of applications
3
HYDRAULIC BREAKERS
ALL 15 MODELS LINE UP 1,5 m
Mini range 1m
0,5 m
JTHB08
JTHB10
JTHB20
JTHB30
JTHB40
JTHB50
Large range
Medium range
JTHB60
JTHB65
JTHB70
JTHB100
JTHB150
SPECIFICATIONS MODEL
JTHB08
JTHB10
JTHB20
JTHB30
JTHB40
JTHB50
75
100
140
200
280
345
Operating weight 2-piece type Box type
4
kg kg
85
120
160
240
335
400
Tool length
mm
450
470
495
590
640
710
Tool diameter
mm
40
45
50
58
64
75
Oil flow
l/min
18-25
20-30
20-35
25-45
30-55
35-60
Operating pressure
Mpa
6-13
7-14
8-15
10-15
10-16
10-16
Impact rate
bpm
930-1300
700-1200
600-1150
550-1000
580-1060
550-1000
Hose size
inch
3/8
1/2
1/2
1/2
1/2
1/2
Gas pressure
Mpa
0.8
0.8
0.8
0.8
0.8
0.8
Base machine weight range
ton
0.7-1.5
1-2
1.5-2.5
2.4-4
3-4.5
3.8-6
JTHB
HYDRAULIC BREAKERS
With a range of 15 breakers from 75 to 5.000 kg (for machines from 0,7 to 70 tonnes), you’re guaranteed to find the right tool for the job.
3m
2.5 m
2m
1,5 m
1m
0,5 m
JTHB190
JTHB230
JTHB310
JTHB400
JTHB60
JTHB65
JTHB70
JTHB100
JTHB150
JTHB190
JTHB230
JTHB310
JTHB400
490
636
1000
1155
1920
2140
2690
3560
5220
580
770
1100
1205
2010
2220
2640
3540
5010
800
800
930
930
1170
1180
1180
1360
1540
95
95
115
115
135
140
146
160
178
45-80
70-100
70-110
100-140
160-200
160-210
180-230
240-300
280-390
10-16
11-17
12-17
14-18
14-18
14-18
13-18
14-18
14-18
550-1000
600-900
450-700
430-600
490-630
370-490
380-450
370-470
370-470
3/4
3/4
3/4
1
1
1
1
1-1/4
1-1/4
0.8
0.8
0.8
0.8
1.1
0.8
0.8
0.8
0.8
5.5-8
7-12
8-15
14-20
18-25
20-30
27-40
38-50
45-70
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HYDRAULIC BREAKERS
BRACKET TYPE
2 PC type
Box type (silenced)
Machine-breaker quick matching table MODEL
JTHB08
JTHB10
JTHB20
JTHB30
JTHB40
JTHB50
JTHB60
Machine weight (ton)
0,7 - 1,5
1-2
1,5 - 2,5
2,4 - 4
3 - 4,5
3,8 - 6
5,5 - 8
PC09-1
PC18MR-2
PC27MR-2
PC35MR-2
PC50MR-2
PC12R-8
PC20MR-2
PC30MR-2
SK1020-5
WB91R-5
PC14R-2
SK714-5
SK1026-5
PC15R-8
SK715-5
CK30-1
PC16R-2
SK818-5
CK35-1
PC75R-2
PC78MR-6
WB93R/S-5
PC88MR-6
WB97R/S-5
PW98MR-6 PW110R-1
SK820-5 CK20-1 CK25-1
* Japanese-sourced machine models The above table is for quick reference only. Please contact your local distributor for a detailed matching table showing the best breaker for your exact machine specifications and breaker connection type.
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JTHB
HYDRAULIC BREAKERS
TOOL SELECTION Correct selection of tools is the first step to obtaining maximum life from the product TYPE
PURPOSE & APPLICATION
SHAPE
Moil point
General demolition - Penetration breaking e.g. concrete, rock bed, …
Flat
General demolition trough cutting action - Penetration breaking e.g. trenching and slope finishing fX
Flat end
Demolition - Impact breaking e.g. secondary rock breaking, scaling in mines and tunnels, reinforced concrete floors, …
Power point
Demolition - Penetration breaking e.g. very hard and abrasive conditions
fY
Extra-long and special-application tools are available on request
JTHB65
JTHB70
JTHB100
JTHB150
JTHB190
JTHB230
JTHB310
JTHB400
7 - 12
8 - 15
14 - 20
18 - 25
20 - 30
27 - 40
38 - 50
45 - 70
PC110R-1
PC130-7
PC160-7
PC200-8*
PC220-8*
PC300-8*
PC400-8*
PC138US-2
PC180-7
PC210-8
PC240-8
PC340-8*
PC450-8
PW140-7
PW160-7
PC230NHD-8
PC270-8*
PC350-8
PW180-7
PC228US-3
PC290-8
PC600-8
PW200-7 PW220-7
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JTHB
HYDRAULIC BREAKERS Auto grease system An optional auto grease system eliminates the need for manual interventions. By greasing the breaker at fixed intervals and with an adjustable output, the system improves ease-of-use and extends the lifetime of your breaker and wear parts. Available on the JTHB40 and larger breakers, it is fully incorporated into the bracket and doesn’t require an external power source.
Underwater use JTHB breakers can be quickly and easily adapted for underwater use through the optional underwater kit. Compressed air is supplied through the air port on the breaker’s body (included as standard across the range), preventing water from entering the breaker.
Other special application kits A number of kits are available for special applications such as: • Extreme-temperature environments (hot or cold) • Extremely dusty environments • Tunnel works Contact your local distributor for more details.
Komatsu - your one-stop shop for hydraulic breakers and accessories ©
Call the experts
Komatsu Europe International NV Mechelsesteenweg 586 B-1800 VILVOORDE (BELGIUM) Tel. +32-2-255 24 11 Fax +32-2-252 19 81 www.komatsu.eu
FESS000100
02/2008
Materials and specifications are subject to change without notice. is a trademark of Komatsu Ltd. Japan.
Printed in Europe – This specification sheet may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require. Materials and specifications are subject to change without notice.
