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iHF High-Sensitivity Diaphragm Coupling Servo Stepper Motor Elastic Coupling

Screw Clamping/Fixing Type Aluminum Alloy High-Sensitivity Diaphragm Coupling

Product features:

Screw Clamping/Fixing Type Aluminum Alloy High-Sensitivity Diaphragm Coupling

1. Core Materials

- Hub: High-strength aluminum alloy (lightweight design with balanced structural strength and corrosion resistance)

- Diaphragm: 304 stainless steel (high rigidity, fatigue resistance for long-term stable operation)

2. Key Performance Characteristics

- High torsional rigidity: Enables precise shaft rotation control for high-precision transmission applications

- Zero-backlash connection: Clearance-free hub-shaft coupling ensures no hysteresis in bidirectional operation

- Low-inertia design: Optimized dynamic response for high-speed operation

- Bidirectional symmetry: Identical rotational characteristics in CW/CCW directions for stable motion control

3. Engineering Design Features

- Motor compatibility: Specifically optimized for servo and stepper motors to enhance system integration

- Misalignment compensation: Stainless steel diaphragm effectively absorbs angular and axial misalignment, reducing installation precision requirements

- Fastening method: High-strength clamping screws ensure reliable connection (optional anti-loosening design available)

4. Typical Applications

- Industrial robotic joint modules

- CNC machine tool spindle drives

- Precision automation equipment (e.g.SMT machines, laser cutters)

- Medical/optical instrument drive systems

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iHF High-Sensitivity Diaphragm Coupling Servo Stepper Motor Elastic Coupling

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)
QLFAW	16.6	23	0.5	0.1	1	±0.18	9000	480	4.22×10^-7	12
	21	24.5	1	0.1	1	±0.18	8000	750	1.11×10^-6	18
	28	32.2	1.5	0.15	1.2	±0.18	8000	2500	4.68×10^-6	45
	34	35	4	0.17	1.5	±0.18	8000	4200	1.11×10^-5	70
	46	44	9	0.22	1.5	±0.25	8000	11000	3.8×10^-5	144
	55	55	25	0.25	1.5	±0.25	8000	16500	1.6×10^-4	265
QSEAW	16	16.6	0.5	0.1	1	±0.09	9000	950	3.16×10^-7	8
	21	16.7	1	0.1	1	±0.14	8000	1600	7.9×10^-7	13
	28	21.5	1.5	0.1	1.2	±0.18	8000	5500	3.24×10^-6	32
	34	23.3	3	0.1	1.5	±0.18	8000	7500	7.6×10^-6	50
	46	29.8	9	0.1	1.5	±0.27	8000	18000	3.23×10^-5	102
	55	37.2	25	0.1	1.5	±0.30	8000	30000	8.19×10^-5	180
QLFJAW	16	23.2	0.9	0.15	2	±0.20	6000	450	2.7×10^-7	12
	20	26	1.3	0.15	2	±0.20	5500	700	8.0×10^-7	26
	25	30.2	2.8	0.15	2	±0.30	5000	950	2.5×10^-6	45
	32	41	5	0.15	2	±0.40	4000	1100	6.6×10^-6	73
	40	47	9	0.2	2	±0.50	3800	2800	1.9×10^-5	100
	50	53	16	0.2	2	±0.60	3500	3400	5.0×10^-4	193
QSEJAW	16	16.5	0.9	0.1	1	±0.10	6000	650	2.2×10^-7	8
	20	18.4	1.3	0.1	1	±0.10	5500	950	7.0×10^-7	12
	25	21.6	2.8	0.1	1	±0.20	5000	1300	2.2×10^-6	24
	32	29	5	0.1	1	±0.20	4000	1400	5.6×10^-6	53
	40	35	9	0.15	1	±0.20	3800	3300	1.5×10^-5	90
	50	41	16	0.15	1	±0.30	3500	4000	3.9×10^-5	180

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	F	M	Fastening Torque (N.m)
Type	D	QLFAW	QSEAW		LF	φd3	F	M	Fastening Torque (N.m)
QLFAW QSEAW	16	-	16.6	3 4 4.5 5 6	8	6.5	3.3	M2.5	0.8
	16.6	23	-	3 4 4.5 5 6	8	6.5	3.3	M2.5	0.8
	21	24.5	16.7	4 5 6 6.35 7 8	8	10.5	3.3	M2.5	0.8
	28	32.2	21.5	5 6 6.35 7 8 9 9.525 10	10.4	15	3.85	M3	1.2
	34	35	23.3	8 9 9.525 10 11 12 12.7 14	11.2	16.5	4.85	M4	2.5
	46	44	29.8	8 9 9.525 10 11 12 12.7 14 15 16 17 18	14.3	25.5	5	M5	5
	55	55	37.2	10 11 12 12.7 14 15 16 17 18 19 20 22 24	17.8	31	6	M5	5

模式		L		d1,d2(Keyway bore diameters are selectable for sizes above 6mm.)	LF	φd3	F	M	Fastening Torque (N.m)
模型	D	QLFJAW	QSEJAW		LF	φd3	F	M	Fastening Torque (N.m)
QLFJAW QSEJAW	16	23.2	16.5	3 4 4.5 5 6	7	6.8	3	M2.5	1
	20	26	18.4	3 4 5 6 6.35 7 8 9 9.525 10	7.5	8.1	3.7	M2.5	1
	25	30.2	21.6	5 6 6.35 7 8 9 9.525 10 11 12 12.7 14	9	10.4	4	M3	1.7
	32	41	29	5 6 6.35 7 8 9 9.525 10 11 12 12.7 14 15 16	12.4	15	6	M4	2.5×10-4
	40	47	35	9 9.525 10 11 12 12.7 14 15 16 17 18 19 20 22 24 25	15.5	19.5	7.8	M5	7
	50	53	41	10 11 12 12.7 14 15 16 17 18 19 20 22 24 25 28 30	18	20	9	M6	12

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
QLFAW	Single Diaphragm	Screw Clamping Type	Aluminum Alloy	Stainless Steel	Anodized	Socket Head Cap Screw(SHCS)
QLFJAW		Cross-Pinned Set Screw Fixation				Hex Socket Set Screw
QSEAW	Double Diaphragm	Screw Clamping Type				Socket Head Cap Screw(SHCS)
QSEJAW		Cross-Pinned Set Screw Fixation				Hex Socket Set Screw

Label : Servo Motor Adaptation Servo Motor Adaptation

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iHF High-Sensitivity Diaphragm Coupling Servo Stepper Motor Elastic Coupling

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