Merit’s 168564 Hammer Piston: Engineered for Performance, Trusted Worldwide
When it comes to hydraulic hammer performance, the piston is the heart of the system—delivering the impact energy that drives productivity in the field. At Merit, we manufacture world-class hydraulic hammer pistons designed to maximize uptime, minimize maintenance, and extend the working life of your equipment.
World-Leading Piston Technology
Merit’s pistons are engineered and precision-machined to meet or exceed OEM specifications. Utilizing cutting-edge metallurgy and advanced heat treatment processes, our pistons ensure:
- Superior impact resistance
- Enhanced wear protection
- Long-term structural durability
Chemical Composition
Manufactured from high-grade alloy steels like 42CrMo4, our pistons are built to withstand the harshest job site conditions.
| Element | Range (%) |
|---|---|
| Carbon (C) | 0.38 – 0.45 |
| Chromium (Cr) | 0.90 – 1.20 |
| Molybdenum (Mo) | 0.15 – 0.30 |
| Manganese (Mn) | 0.60 – 0.90 |
| Silicon (Si) | 0.20 – 0.40 |
These materials provide:
- High tensile strength
- Excellent fatigue resistance
- Superior toughness under impact loading
- Resistance to cracking and deformation
Technical Advantages
🔧 CNC Precision Machining
Merit pistons are crafted with exact tolerances using multi-axis CNC equipment for unmatched consistency.
🔩 Surface Hardening & Nitriding
Achieves surface hardness of 58–62 HRC, ensuring longer wear life and reduced maintenance.
🛡 Low Friction Coating
Decreases internal friction and seal wear, minimizing the need for frequent repairs.
🔨 Shock Absorption Geometry
Optimized design enables efficient energy transfer while reducing vibration and stress on hammer components.
Lower Repair Costs – Higher Contractor Profits
Merit pistons are engineered not just for performance, but also for profitability. By reducing internal wear, preventing frequent seal failures, and lowering stress on critical hammer components, our pistons:
- Cut down repair frequency and costs
- Extend the life of expensive parts like cylinders, front heads, tie rods, and bushings
- Allow for longer operation intervals without breakdowns
📈 Case Study: Middle East Contractor Saves $21,000 in Annual Repair Costs
Client: Large excavation contractor operating in Saudi Arabia
Problem: Frequent failures in OEM pistons used in a 5-ton class breaker, resulting in excessive downtime and $2,901+ in monthly repair bills.
Solution: Switched to Merit 168564 pistons.
Outcome:
- Maintenance cycle increased from 3 months to 9 months
- Seal replacements dropped by 77%
- Downtime reduced by 49+ hours/year
- Annual savings on repairs and lost time: $21,033+
The site supervisor remarked:
“Since switching to Merit pistons, we’ve spent less time in the workshop and more time on-site. That translates directly into profits.”
✅ Warranty You Can Trust
Merit pistons come with a 6-month warranty against manufacturer defects. This warranty reflects our confidence in quality and commitment to customer satisfaction.
Trusted by the World’s Best
Merit pistons are relied on by:
- Major contractors
- OEM service centers
- Heavy machinery dealers in over 55 countries
From deep mining sites in Australia to high-load construction jobs in North America and the Middle East, Merit’s pistons deliver performance that pays off.
Choose Merit – Because Performance Matters
Want to reduce your repair costs and boost profits?
🟢 Contact us today to learn more about our full range of hydraulic breaker pistons and their compatibility with major brands like Rammer®, Sandvik®, Atlas Copco®, Epiroc®, and more.
| RAMMER/ SANDVIK | 173681 | FRONT HEAD |
| RAMMER/ SANDVIK | 172307 | MEMBRANE |
| RAMMER/ SANDVIK | 160002 | CYLINDER |
| RAMMER/ SANDVIK | 165464 | SEAL SET |
| RAMMER/ SANDVIK | 160020 | TOOL RETAINING PIN |
| RAMMER/ SANDVIK | 160010 | THRUST RING |
| RAMMER/ SANDVIK | 160008 | LOWER TOOL BUSHING |
| RAMMER/ SANDVIK | 163002 | TIE ROD |
| RAMMER/ SANDVIK | 160009 | UPPER TOOL BUSHING |
| RAMMER/ SANDVIK | 160003 | PISTON |
| RAMMER/ SANDVIK | 991 | CHISEL |
| RAMMER/ SANDVIK | 993 | MOIL POINT |
| RAMMER/ SANDVIK | 994 | BLUNT |
| RAMMER/ SANDVIK | 993K3 | PYRAMID |
| RAMMER/ SANDVIK | 991A2 | HARD ROCK CHISEL |
|
Sandvik SANDVIK-RAMMER
|
40633
|
ACCUMULATOR CHARGING KIT New
|
|
Sandvik SANDVIK-RAMMER
|
993
|
MOIL POINT TOOL New
|
|
Sandvik SANDVIK-RAMMER
|
K14099E
|
SERVICE KIT New
|
|
Sandvik SANDVIK-RAMMER
|
104068
|
PAD New
|
|
Sandvik SANDVIK-RAMMER
|
954819
|
HOSE ASSY New
|
|
Sandvik SANDVIK-RAMMER
|
176222
|
TOOL SEAL New
|
|
Sandvik SANDVIK-RAMMER
|
168842
|
HOSE ASSY New
|
|
Sandvik SANDVIK-RAMMER
|
165464
|
SEAL SET (FOR HAMMER) New
|
|
Sandvik SANDVIK-RAMMER
|
160576
|
PLUG New
|
Part Number Part Name
183915 Housing
104068 Pad
172579 Buffer
176703 Seal
105780 Shield plate
160576 Plug
176708 Plug
400491 Plug
101723 Plug
158147 Plug
953291 Plug
953332 Rubber plug
953292 Rubber plug
901464 Lifting eye M36 DIN 580
901465 Hex. screw M36x40-8.8 ISO 4017
176222 Tool seal
182428 Wear plate
90520 Hex. screw M36x140-8.8 ISO 4014
90521 Washer 37 ISO 7416
90519 Lock nut M36-8 DIN 985
178838 Buffer plate (incl. parts 21.1-21.3)
178839 Plate
175832 Shield plate
175831 Casing
182429 Spring ring
181226 Wear parts
178056 Label set (incl. part 200.1)
169400 Safety label set (English)
181694 Housing (HD)
176952 Wear plate (HD)
176954 Wear plate (HD)
181227 Wear parts (HD)
176658 Accumulator (incl. parts 1.1-1.9)
160018 Accumulator bottom
176659 Accumulator cover
172307 Membrane
40528 Accumulator screw
40368 Filling plug
954323 Shield plug
90056 Usti-ring 8-13.9-1
90304 Parallel pin 10m6x24 ISO 8734
300711 Accumulator screw
40536 Seal
90076 O-ring D229
169987 Main valve (incl. parts 10-16)
169988 Main valve bushing
169989 Main spool
110986 Spool
110781 Spool
169990 Cover
902644 Seal D125
90032 O-ring D120
900036 Hex. screw M20x70-10.9 ISO 4014
91010 Lock washer M20 NORD-LOCK
171029 Ramvalve (incl. parts 1.1-1.10)
172149 Cover
172204 Valve housing
171031 Spool
954342 Spring
90017 O-ring D34
90031 O-ring D46
90007 O-ring D44
954349 Shim plate S=1
954348 Shim plate S=0.5
954341 Seal D34
90597 Lock washer M16 NORD-LOCK
90517 Hex. screw M16x35-8.8 ISO 4017
161980 Pressure control valve (incl. parts 1.1-1.15)
161974 Cover
161982 Valve housing
161975 Spool
161976 Guide
400582 Spool
90030 O-ring D75
90118 Spring
41374 Seal D55
161973 Spring guide
174183 Shim plate S=0.75
42363 Shim plate S=1
42362 Shim plate S=0.5
40533 Seal D65
90015 O-ring D26
161981 Plug
163445 Valve (incl. parts 1.1-1.4)
156729 Cover
163446 Spool
112835 Seal D13
90001 O-ring D20
161414 Pin
951797 Spring (Danly 9-1006-11)
90444 Flange plug BSP 3/8
163002 Tie rod (incl. parts 1.1-1.6)
155555 Vibration dampening element
952009 Cable tie
101449 Lock plate
40586 Rubber ring
162999 Valve body (incl. parts 1.2-1.5)
90410 Flange plug R1
90403 Flange plug R1/4
159795 Nozzle
160002 Cylinder
160003 Piston
163000 Seal carrier (incl. parts 4.2-4.3)
101700 Breather (incl. part 4.22)
901173 O-ring D27
173557 Plug
952371 Wiper D142
955498 Seal
111871 Seal
952370 Wiper D160
903066 Seal
952372 Seal
910015 O-ring D269
953266 Supporting ring D280
94102 O-ring D154
901124 O-ring D17
90317 Parallel pin 16m6x50 ISO 8734
90034 O-ring D259
176660 Front head (incl. parts 1.2-1.5)
900051 Hex. screw M16x40-12.9 ISO 4017
176516 Hex. socket screw M10
91037 Lock washer M10 NORD-LOCK
160010 Thrust ring
90003 O-ring D239
160009 Upper tool bushing
160020 Tool retaining pin
160482 Ring
40110 Wedge
90000 O-ring D24
173682 Retaining pin
173686 Rubber ring
178417 Lower tool bushing (incl. part 1.1)
991 Chisel
993 M oil point
994 Blunt
993K3 Pyramid
991A2 Hard Rock Chisel
991F3 Limestone Chisel
994T2 Super Blunt
992 Long chisel
998 Long m oil point
165464 Seal set (incl. parts 1-32)
951293 O-ring D9
910006 O-ring D23
K14099E Service kit (incl. parts 1-4)
183875 Service kit (incl. parts 1-5)
183876 Service kit (incl. parts 1-5)
168833 Greasing block for manual greasing (incl. parts 3-7)
168842 Hose assembly (incl. parts 2.1-2.5)
953927 Hose
153035 Sleeve
153036 Insert
951296 Nut
951294 Connector BSPP 1/4
168824 Body
901542 Hex. screw M10x70-8.8 ISO 4014
953503 Lock washer M10 NL10sp NORD-LOCK
952093 Shield
K60099 Greasing device kit (incl. parts 1-13)
953345 Greasing device RG542
953794 Hex. screw M10x110-8.8 ISO 4014
951370 Grease cartridge
168032 Shield
902895 Hex. socket screw M16x35-8.8 ISO 4762
951295 Connector BSPP 3/8
954819 Hose assembly
173573 Doser (incl. parts 2.1-2.14)
173574 Plug
953330 Nut M12x1 DIN 934
91038 Lock washer M24 NORD-LOCK
953325 O-ring D21
953317 Adjusting screw
953326 O-ring D8
953324 O-ring D11
953331 Spring
173576 Piston
953322 O-ring D7
953329 Piston
173575 Body
953323 O-ring D15
953321 Shim plate
953335 Body
953334 Cartridge holder
951767 Check valve
951416 O-ring D19
951453 O-ring D62
953300 O-ring D71
953301 O-ring D52
950272 Guide ring
953299 Seal
953308 Spring housing
950257 Spring
953307 Piston
953306 Nut
951410 Lock plate
951421 Hex. socket screw M8x10-8.8 ISO 4762
953385 Seal set for greasing device
RD3-FACE RD3 kit (incl. parts 1-3)
177284 RD3 remote monitoring device (Surface mounted)
955168 One-way-drive screw M8x30
903209 Washer 8-140 HV ISO 7089
173748 Tool box R2 (incl. parts 1-11)
90202 Grease gun
902045 Tool grease
150020 Puller
953767 Grease nipple R3/8
400587 Coupling set (incl. parts 1.1-1.3)
90531 Flange (SAE 1 1/4 6000 psi – BSP 1 1/4 FEMALE)
90009 O-ring
90593 Hexagon socket screw M14x45-8.8 ISO 4762
400599 Coupling set (incl. parts 1.1-1.3)
915069 Flange (SAE 1 1/4 6000 psi – JIC 20, 1 5/8-12 MALE)
400591 Coupling set (incl. parts 1.1-1.3)
915055 Flange (SAE 1 1/4 6000 psi – JIS 30° BSP 1 1/4 MALE)
400590 Coupling set (incl. parts 1.1-1.3)
915071 Flange (SAE 1 1/4 6000 psi – M52x2 MALE)
