300953 Rammer Buffer E68 | Engineered to Absorb the Toughest Impacts

In high-impact hydraulic breaker operations, the buffer plays a critical role in protecting key components by absorbing shock loads and reducing vibration.
The 300953 Rammer Buffer E68, manufactured by Merit Engineering, is designed to deliver consistent performance under the most demanding working conditions.

Key Advantages of Merit Rammer Buffer E68 (300953):

• OEM-Equivalent Fit & Performance
  Manufactured to exact dimensions to ensure perfect compatibility with Rammer E68 hydraulic breakers.
• High Energy Absorption
  Optimized material composition helps reduce peak impact forces, extending the service life of pistons, front head, and internal components.
• Durability in Extreme Conditions
  Resistant to deformation, cracking, and premature wear, even in continuous heavy-duty applications such as mining, demolition, and quarrying.
• Reduced Downtime, Lower Costs
  A reliable buffer minimizes unplanned stoppages and contributes directly to lower maintenance and operating costs.

At Merit Engineering, every buffer is produced under strict quality control to meet the expectations of professional contractors and fleet operators worldwide.

Part Number: 300953
Application: Rammer E68
Supply Type: OEM-equivalent | B2B export

Build reliability into every удар. Choose Merit for hydraulic breaker parts that work as hard as your machines.

Rammer	E66	200571
Rammer	E-66	100302
Rammer	E66	301001
Rammer	E-66	301000
Rammer	E-68	400655
Rammer	E68	400654
Rammer	E-68	400667
Rammer	E68	100660
Rammer	E-68	103761
Rammer	E68	103782
Rammer	E-68	400659
Rammer	E68	30211
Rammer	E-68	102156
Rammer	E68	400653
Rammer	E-68	200521
Rammer	E68	110713
Rammer	E-68	300954
Rammer	E68	300953

1. Housing Unit E 68

Part Number	Description	Qty
104007	Housing (incl. parts 103-111)	1
300954	Pad	2
300953	Buffer	1
102563	Shield plate	1
102143	Seal	1
400566	Rubber plug D25	3
400676	Rubber plug D50	6
90589	Hex. screw M24x110-12.9 DIN 931	14
90511	Washer 25 DIN 6916	14
90507	Lock nut M24-12 DIN 985	14
102454	Wear plate	6
102456	Wear plate	2
90705	Lifting eye M30 DIN 580	1
900026	Hex. screw M30x40-8.8 DIN 933	1
102445	Pin	1
102458	Pin	1
103994	Pin	6
104069	Label set (Kit)	1

2. Housing Unit E 68 CITY

Part Number	Description	Qty
102825	Housing (incl. parts 103-119)	1
300954	Pad	2
300953	Buffer	1
102563	Shield plate	1
102143	Seal	1
400676	Rubber plug D50	6
400566	Rubber plug D25	7
90589	Hex. screw M24x110-12.9 DIN 931	14
90511	Washer 25 DIN 6916	14
90507	Lock nut M24-12 DIN 985	14
103983	Wear plate	2
103982	Wear plate	1
103984	Wear plate	2
102982	Shield plate (incl. part 107.1)	2
103875	Shield plug	2
90705	Lifting eye M30 DIN 580	1
900026	Hex. screw M30x40-8.8 DIN 933	1
102944	Middle bushing	4
102939	Middle bushing	4
91050	Hex. screw M12x40-8.8 DIN 933	4
90513	Hex. screw M12x30-8.8 DIN 933	4
91012	Lock washer M12 NORD-LOCK	8
102562	Damper plate	4
103994	Pin	6
102445	Pin	1
102458	Pin	1
104162	Label set (Kit)	1

3. Housing Unit E 68 CITY-JET

Part Number	Description	Qty
104366	Housing (incl. parts 103-124)	1
300954	Pad	2
300953	Buffer	1
102563	Shield plate	1
102143	Seal	1
400676	Rubber plug D50	6
400566	Rubber plug D25	7
90589	Hex. screw M24x110-12.9 DIN 931	14
90511	Washer 25 DIN 6916	14
90507	Lock nut M24-12 DIN 985	14
104373	Wear plate	2
103982	Wear plate	1
103984	Wear plate	2
102982	Shield plate (incl. part 107.1)	2
103875	Shield plug	2
90705	Lifting eye M30 DIN 580	1
900026	Hex. screw M30x40-8.8 DIN 933	1
102944	Middle bushing	4
102939	Middle bushing	4
91050	Hex. screw M12x40-8.8 DIN 933	4
90513	Hex. screw M12x30-8.8 DIN 933	4
91012	Lock washer M12 NORD-LOCK	8
102560	Damper plate	4
103047	Guide	2
102783	Nozzle SSCO B1/8-GG-SS5	2
104377	Hose assembly	2
90424	Flange plug R1/2	1
90403	Flange plug R1/4	1
103994	Pin	6
102445	Pin	1
102458	Pin	1
106134	Label set	1

4. Accumulator E 68

Part Number	Description	Qty
300924	Accumulator (incl. parts 1.1-1.10)	1
100672	Accumulator bottom	1
100673	Accumulator cover	1
30211	Membrane	1
40416	Accumulator screw	16
40368	Filling plug	1
40104	Seal D114	1
154015	Shield plug	1
90056	Ustr-ring U8.7-14-1	1
90304	Parallel pin 10m6x24 DIN 6325	2
910006	O-ring D23	1
301019	Accumulator screw	8

5. Main Valve E 68

Part Number	Description	Qty
200246	Main valve bushing	1
300418	Main spool	1
40111	Spool	1
40112	Spool	1
30777	Cover	1
30776	Cover	1
90005	O-ring D105	2
90020	Seal D105	6
90517	Hex. screw M16x35-8.8 DIN 933	12
90597	Lock washer M16 NORD-LOCK	12

6. Check Valve E 68

Part Number	Description	Qty
300943	Check valve (incl. parts 1.1-1.6, 51 and 53)	1
300933	Check valve housing	1
90432	Check valve	1
90310	Spring ring B38 DIN 7993	1
90403	Flange plug R1/4	1
90031	O-ring D46	1
90007	O-ring D44	1
90517	Hex. screw M16x35-8.8 DIN 933	4
90597	Lock washer M16 NORD-LOCK	4

7. Pressure Control Valve E 68

Part Number	Description	Qty
300913	Pressure control valve (incl. parts 1.1-1.11, 51 and 53)	1
300998	Cover	1
300999	Valve housing	1
400687	Spool	1
400688	Guide	1
400690	Spool	1
40275	Spring guide	1
90104	Spring	1
42364	Shim plate S=1.5	x
42365	Shim plate S=1.25	x
42366	Shim plate S=0.9	x
41375	Seal D50	1
41374	Seal D55	1
90083	O-ring D60	1
90517	Hex. screw M16x35-8.8 DIN 933	4
90597	Lock washer M16 NORD-LOCK	4

8. Tie Rods E 68

Part Number	Description	Qty
103761	Tie rod	4
103782	Tie rod nut	4
400659	Lock plate	4
400661	Rubber ring	4

9. Body Parts E 68

Part Number	Description	Qty
100638	Valve body (incl. parts 28, 49 and 50)	1
100640	Cylinder (incl. parts 50, 55 and 57)	1
100660	Piston	1
100641	Seal carrier	1
400662	Breather	1
90317	Parallel pin 16m6x50 DIN 6325	2
94118	Seal D125	1
911008	Seal D106	2
94119	Wiper D125	1
40141	Wiper D106	1
41350	Seal D130	1
400663	Seal D230	1
40137	Seal D165	1
90076	O-ring D229	2
910018	O-ring D21	2
90012	O-ring D19	1
90401	Flange plug R3/4	1
90444	Flange plug R3/8	6
101200	Breather (incl. part 55.2)	1
902122	O-ring D24	1
93125	Taper plug DIN 906-R1/4	1

10. Front Head E 68

Part Number	Description	Qty
200521	Thrust ring	1
110713	Front head (incl. parts 9.2-9.4)	1
90200	Grease nipple	2
110705	Plug	1
110710	Plug	1
400653	Upper tool bushing	1
400654	Tool retaining pin D63	2
40110	Wedge	1
400655	Retaining pin D30	1
400361	Retaining pin D20	1
40108	Pin D30	1
901132	Split pin D30x60	1
904022	Split pin 21×60 DIN 1481	1
920007	Spring	1
90036	O-ring D209	1
90000	O-ring D24	1
101094	Spring guide	1

11. Lower Tool Bushing E 68

Part Number	Description	Qty
102156	Lower tool bushing (incl. part 1.2)	1
102147	Seal	1

12. Seal Set E 68

Part Number	Description	Qty
400667	Seal set (incl. parts 1-25)	1
94118	Seal D125	1
911008	Seal D106	2
94119	Wiper D125	1
40141	Wiper D106	1
41350	Seal D130	1
400663	Seal D230	1
40137	Seal D165	1
90076	O-ring D229	2
90036	O-ring D209	1
90000	O-ring D24	3
910018	O-ring D21	2
90012	O-ring D19	1
90005	O-ring D105	2
90020	Seal D105	6
902122	O-ring D24	1
40104	Seal D114	1
90056	Ustr-ring U8.7-14-1	1
901026	O-ring D14	1
41375	Seal D50	1
41374	Seal D55	1
90083	O-ring D60	1
90031	O-ring D46	1
90007	O-ring D44	1
910006	O-ring D23	1