MN,AMN series internal tension friction safety friction couplingDetailed product description：

The AMN type internal tension friction type safety coupling is a structural type of friction type safety coupling. It uses two cylindrical spiral springs to press the bow shaped friction plate through the middle ring, generating frictional force between the friction pairs. The magnitude of this frictional force determines the sliding torque of the coupling. Adjust the sliding torque of the coupling by replacing the spring. When the transmitted torque exceeds the sliding torque of the coupling, slippage occurs between the main and driven sides of the coupling; When the transmitted torque is lower than the sliding torque, there is no relative sliding on both sides of the coupling, and it automatically resumes normal operation. Normal operation within the scope of use generally does not require replacement of parts. With the correct selection of AMN type internal tension friction safety couplings, it can effectively partially reduce the impact load during shaft transmission start-up, accelerate the machine evenly, and prevent the motor from burning out due to overload. Can be used for working conditions that require overload safety protection to avoid damage to critical components.

Basic parameters and main dimensions of AMN type internal tension friction safety friction coupling mm (JB/T 6138-92)

model	Sliding torque Tn N · m	Allowable speed [n] r/min	Shaft hole diameter	Shaft hole length L	D	D1	H	S	Weight kg	Coupling moment of inertia kg · m2
	min max		d1 、 d2	Y J1
AMN1	10~50	three thousand	16~38	30~80	one hundred and fifty-three	seventy-five	fifty-two	five	9 ． 3	0 ． 014
AMN2	20~160	two thousand and eight hundred	25~48	44~112	one hundred and ninety-five	eighty-five	sixty-six	five	18 ． 1	0 ． 047
AMN3	71~150	one thousand and eight hundred	35~75	60~142	two hundred and ninety-five	one hundred and fifteen	ninety-one	five	48 ． 7	0 ． 317
AMN4	250~1600	one thousand and five hundred	50~90	84~172	three hundred and ninety-five	one hundred and fifty	one hundred and twenty-five	five	one hundred and twelve	3 ． 38
AMN5	800~4000	one thousand and five hundred	70~125	107~212	four hundred and ninety	one hundred and ninety	one hundred and eighty-two	seven	two hundred and thirty-eight	6 ． 2
AMN6	2500~6300	one thousand	95~160	132~302	five hundred and ninety	two hundred and forty	two hundred and thirteen	thirty-three	four hundred and ninety	14 ． 5

Note:
1. Sliding torque is the torque value transmitted by the coupling at the moment when relative sliding occurs between the main and driven ends.  
2. Sliding rotation within the range of max and min, selected according to the series values specified in GB3507, with a deviation of+-10%.
3. There is only one type of shaft hole length L on the d1 side of the half axis of AMN5 and AMN6, with AMN5 L=212mm and AMN6 L=302mm.
4. The allowable radial deviation is 0.15mm.
5. Allowable angular deviation of 3 º