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iHF CNC Machine Parts Aluminium Coupling with Double Diaphragm

Drive the world with planetary transmission and lead the future with precision manufacturing

Product features:

Double Diaphragm Short Clamping Type Aluminum Alloy Diaphragm Coupling

1.Material

- Hub: High-strength aluminum alloy

- Diaphragm: 304 stainless steel

2.Performance

- High torsional rigidity for precise shaft rotation control

- Extended design for effective radial, angular, and axial misalignment compensation

- Zero-backlash hub-shaft connection for bidirectional operation

- Low inertia suitable for high-speed applications

3.Design Features

- Optimized for servo/stepper motor integration

- Clamping screw fastening method

4.Key Applications

- High-precision motion control systems

- Industrial automation equipment

- Robotics and CNC machinery

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iHF CNC Machine Parts Aluminium Coupling with Double Diaphragm

Model		L	Allowable Torque (N·m)	Allowable Misalignment (Radial) (mm)	Allowable Angular Misalignment (<°)	Allowable Axial Displacement (mm)	Maximum Allowable Speed (RPM)	Static Torsional Stiffness (N.m/rad)	Moment of Inertia (N.m)	Coupling Weight (g)
Type	D	L	Allowable Torque (N·m)	Allowable Misalignment (Radial) (mm)	Allowable Angular Misalignment (<°)	Allowable Axial Displacement (mm)	Maximum Allowable Speed (RPM)	Static Torsional Stiffness (N.m/rad)	Moment of Inertia (N.m)	Coupling Weight (g)
QLDAW	19	24.5	1	0.12	1.5	±0.18	10000	500	8.19×10^-6	13.2
	26	30	1.5	0.15	1.5	±0.30	10000	1850	1.7×10^-6	32
	32	38	3	0.17	1.5	±0.36	10000	2850	7.6×10^-5	58
	34	38	3	0.17	1.5	±0.36	10000	4050	9.0×10^-5	71
	39	47	6	0.22	1.5	±0.45	10000	9000	2.7×10^-5	110
	44	47	9	0.22	1.5	±0.54	10000	10000	3.8×10^-5	134
	50	53	16	0.23	1.5	±0.68	10000	16000	4.2×10^-5	225
	56	57	25	0.27	1.5	±0.72	10000	25000	1.14×10^-4	298
	68	68	60	0.31	1.5	±0.8	10000	35000	1.8×10^-4	472
	82	87	80	0.55	1.5	±0.8	10000	70000	2.25×10^-4	983

The inner bores on both ends of the coupling can be freely combined between minimum and maximum diameters, machined to H7 standard tolerance. Bore dimensions listed in tables are for reference only; for custom bore requirements, please contact our customer support, sales representatives, or technical personnel for detailed parameters.

Model		L	d1,d2 (Keyway bore diameters are selectable for sizes above 6mm.)	LF	φd3	S	F	M	Fastening Torque (N.m)
Type	D	Double Diaphragm		LF	φd3	S	F	M	Fastening Torque (N.m)
QLDAW	19	24.5	3 4 5 6 6.35 7 8	9.1	9	1.8	3.3	M2.5	0.8
	26	30	5 6 6.35 7 8 9 9.525 10 11 12 12.7 14	10.6	15	2.6	3.9	M3	1.2
	32	38	5 6 6.35 7 8 9 9.525 10 11 12 12.7 14 15	12.25	15.5	3.5	3.85	M3	1.2
	34	38	5 6 6.35 7 8 9 9.525 10 11 12 12.7 14 15 16	12.25	16.5	3.5	4.85	M4	2.5
	39	47	6 8 9 9.525 10 11 12 12.7 14 15 16 17 18 19	14.9	19.3	4.4	5	M4	2.5
	44	47	6 8 9 9 9.525 10 11 12 12.7 14 15 16 17 18 19 20 22	14.9	22.5	4.5	5	M4	2.5
	50	53	6 8 9 9.525 10 11 12 12.7 14 15 16 17 18 19 25 28 30 32	18.1	26	4.8	5.8	M5	5.0
	56	57	12 14 15 16 17 18 19 20 22 24 25 28 30 32	19.75	32.5	5.5	6.4	M5	5.0
	68	68	16 17 18 19 20 22 24 25 28 30 32 35 38	23.35	38.3	6.3	7.7	M6	8.0
	82	87	17 18 19 20 22 24 25 28 30 32 35 38 40 42	30	45.5	8	9.7	M8	20

The moment of inertia and all technical parameters provided are measured with the maximum bore size as the reference standard. The maximum rated torque correlates directly with the coupling's fatigue life. Larger outer diameters increase load capacity, while smaller outer diameters permit higher maximum allowable speeds.

Model	Type		Material		Surface Treatment	Accessories
			Housing	Diaphragm
QLDAW	Double Diaphragm	Short Clamping Type	Aluminum Alloy	Stainless Steel	Anodized	Socket Head Cap Screw(SHCS)

Label : Servo Motor Adaptation Servo Motor Adaptation

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iHF CNC Machine Parts Aluminium Coupling with Double Diaphragm

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