Shock Absorbers, Preset(Fixed) Damping Type

Fixed Type Simple structure, commonly used in the mechanism to absorb impact energy. The product is not adjustable. Different buffering characteristics can be obtained by changing the size of the internaloverflow hole, the number and position of the overflow hole.
Depending on different collision velocities, there are high speed (H), medium speed (M),and low speed (L). There are single hole overflow type and multiple hole overflow type according to the change in the overflow area.

The advantages of using Fixed Type:
1. Improve production efficiency: equipment can be operated at high frequency and high speed to improve production efficiency because the Fixed Type can stop the impact object smoothly.
2. Extend mechanical life: the buffer can absorb the energy generated by the impact, greatly reduce the impact and vibration caused by the object to the machine, and avoid damage due to impact vibration.
3. Improve product quality: the buffer eliminates the shock caused by impact objects and the damaging impact, allowing the smooth operation of the machine and equipment, and improving the product quality.
4. Significantly reduce noise, and provide a quiet working environment.
5. Improve the safety of mechanical running.

■Product features
·Simple structure, strong stability
·Soft cushioning effect throughout the entire stroke

■ The products Fixed Type are divided into

Collision Velocity	Maximum Collision Velocity	Operating environment temperature	Reference number of replacements
L For Low Speed	～1.0m/s	-5~70℃	800,000 cycles
M for Medium Speed	～2.0m/s
H for High Speed	～3.5m/s

■Product material

Mounting Screw Nominal (M)	Material		Surface Treatment
M4～M12	Body	12L14	Black oxide
M14～M36		STKM11A
M4～M10	Cap	Nylon
M12～M36		Urethane

Stopper Nut
It can be used with both cap and capless type of Shock Absorbers. Setting buffer improves the service life of the Absorber.

Specification	Mounting Screw Nominal	S	H	L	Shock Absorber Type
	M	mm	mm	mm	Fixed	Two-stage	Adjusting	Heavy Load Absorption
Stopper Nut	M8×1.0	11	12.6	14	○	○	None	None
	M10×1.0	12.7	14.5	16	○	○	None	None
	M12×1.0	14	16	20	○	○	○	None
	M14×1.5	19	21.6	27	○	○	○	None
	M16×1.5	19	21.6	27	None	None	○	None
	M20×1.5	26	29.7	35	○	○	○	None
	M25×1.5	32	36.7	45	○	○	○	None
	M25×1.5	32	36.7	65	○	None	○	None
	M27×1.5	32	36.7	45	None	○	○	None
	M36×1.5	46	53	80	○	None	○	None
	M42×1.5	50	57.7	100	None	None	None	○

Mounting Flange
Equipped with large-sized shock absorber, no need to thread the workpiece, directly fixed with a flange, easy installation

Specifications	Mounting Screw Nominal	M1	H	H1	H2	L	T	T1	Shock Absorber Type
	M	φ	mm	mm	mm	mm	mm	mm	Fix\ed	Heavy Load Absorption
Mounting Flange	M36×1.5	4－φ8.5	60	41	45	45	16	2	○	None
	M42×1.5	4－φ8.5	60	41	45	45	16	2	None	○
	2 1/2×12 UNF	4－φ10.5	89	70	55	55	16	2	None	○

※ The stopper nut and mounting flange must be ordered together with the shock absorber, and cannot be ordered separately.

Part Number			Cap	Stopper Nut	Mounting Flange	Mounting Screw Nominal (M)	Stroke (S)	Max. Energy Absorbed (E')		Max. Equivalent Mass (me') (kg)	Max.Collision Velocity (M/S)	Total Length (L)		L1	L2	T	t	d	d1	B (Both Surface Width)
Type	NO.	Collision Velocity Type						Per Cycle (J)	Per Minute (J)			Cap provided	Cap not provided
C－AC	0404	L	- (Provided) N (Not provided)	Not Provided	Not Provided	M4×0.5	4	1.2	72	2.5	0.5	32.6	28.6	20.6	4	3	4	3	1.2	7
		M								1.2	1
		H								0.3	2
	0604	L				M6×0.75	4	1.8	108	4	0.5	33.6	29.6	21.1	4.5	3.3	4	4.6	1.8	8
		M								1.8	1
		H								0.4	2
	0805	L		- (Not provided) SC (Provided)		M8×0.75	5	1.2	72	2.5	0.5	37.1	32	22	5	4	5.1	6	1.8	11
		M								1.2	1
		H								0.3	2
	0806	L				M8×1.0	6	2.5	120	6.5	0.5	50	44	32	6	4	6	6.6	2.9	11
		M								2.5	1
		H								0.6	2
	1005	L				M10×1.0	5	3	180	7	0.8	38.7	32.7	21.7	6	4	6	8.6	3	12.9
		M								3	1.5
		H								1	3
	1008	L				M10×1.0	8	4	240	9	0.8	57	51	37	6	4	6	8.6	3	12.9
		M								4	1.5
		H								2	3
	1210	L				M12×1.0	10	5	300	30	0.8	69.2	60	44	6	4	9.2	10.3	3	14
		M								10	1.5
		H								5	3
	1412	L				M14×1.5	12	15	600	100	0.8	100.2	88.2	70.2	6	5	12	12	4	19
		M								50	1.5
		H								8	3
	1416	L				M14×1.5	16	20	660	150	0.8	123	111	89	6	5	12	12	4	19
		M								70	1.5
		H								10	3.0
	2020	L				M20×1.5	20	40	800	700	1	145.8	130	104	6	8	15.8	18	6	26
		M								200	2
		H								30	3.5
	2030	L				M20×1.5	30	50	900	700	1	155.8	140	104	6	8	15.8	18	6	26
		M								200	2
		H								30	3.5
	2050	L				M20×1.5	50	60	1100	1200	1	232.8	217	161	6	8	15.8	18	6	26
		M								400	2
		H								60	3.5
	2525	L				M25×1.5	25	80	1000	1000	1	154.5	136	106	5	10	18.5	22	8	32
		M								600	2.5
		H								200	4
	2550	L				M25×1.5	50	135	1500	1680	1	239	220.5	100	70.5	10	18.5	22	8	32
		M								900	2.5
		H								200	4
	2580	L				M25×1.5	80	150	2000	1200	1	335.5	317	100	137	10	18.5	22	8	32
		M								600	2.5
		H								150	4
	3660	L			- (Not provided) F (Provided)	M36×1.5	60	250	2080	2400	1	247	－	134	11	15	25	35	10	46
		M								1500	2.5
		H								400	4

1. Fixed Type Simple structure and easy installation.
2. Fixed Type miniaturized design and strong space adaptability.
3. Fixed Type absorb energy smoothly and softly.
4. Fixed Type, Abundant stock and fast delivery.
5. Fixed Type has long life with 800,000 times being used for reference.
6. The products Fixed Type of M08 to M14 are equipped with two anti-loosening washers, and the mounting hole effectively prevents loosening without tapping.

1. Fixed Type, Do not exceed the specified locking torque value during installation as shown in the following table for details:

Coarse Outer Diameter (mm)	M4ⅹ0.5	M6ⅹ0.75	M8ⅹ1.0	M10ⅹ1.0	M12ⅹ1.0	M14ⅹ1.5	M20ⅹ1.5	M25ⅹ1.5	M36ⅹ1.5	M42ⅹ1.5
Tightening torque of nut (N.m)	0.35	0.85	3.9	7.8	7.8	9.8	29.4	49	98	392

2. Fixed Type, Pay attention to check whether the head circlip is off.
■ Overloaded buffer will cause abnormal increase in the internal pressure of the buffer tube, making the head circlip off, and internal parts may pop up and cause injury.
■ When the buffer with the head circlip is working, please keep your face and other parts away from it.

3. Fixed Type, Please pay attention to the splash of the broken buffer head due to impact.
■ Overload use will cause damage to the head, resulting in injury.
■ It is recommended to install an anti-splashing cover.

4. Fixed Type, Please pay attention to lateral misalignment load and lateral misalignment angle.
■ When the lateral misalignment load exceeds ±2.5 degrees, it will cause piston rod bending, bad reset, and internal lateral misalignment friction, resulting in performance degradation and even product breakage.
Please aim at the center line of the buffer piston rod for impact. (If the lateral misalignment angle is greater than ±2.5 degrees, please use the angular misalignment absorber (the range of lateral misalignment:± within 10 degrees)

5. Fixed Type, Operating Temperature Range
■ Please use the buffer within the specified temperature range.
▪ Use outside the specified range will reduce the life of the seal packing and the pressure accumulating sponge, and cause the buffer to break.

6. Fixed Type, Operating Environment Requirements
■ Please do not use it under medium or high pressure in a vacuum environment.
■ Keep the guide shaft clean, and avoid cutting powder, cutting fluid, water, etc. from being attached to the guide shaft, otherwise it will cause seal damage, oil leakage, poor buffer action, and buffer damage.
※ If you need to use it in the cutting fluid environment, please choose Misumi’s cutting fluid resistant buffer series products. See Misumi's official website.
 

Drawings of Examples of Use are for informational purposes only