Two Diaphragms Coupling, 4mm To 8mm

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$126.98

Ex Tax: $126.98

Stock: In Stock
Model: RDDLZ-SC-GLM1927
Weight: 1.00
SKU: RDDLZ-SC-GLM1927

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Short Description

φd1 Inner Diameter Size (mm)

φd2 Inner Diameter Size (mm)

WIth Keyway

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Two diaphragms coupling bore 4mm to 8mm, length 27mm, width 19mm. For occasions where the load is frequently started or the working load changes, the coupling acts as a buffer for protection.

Specification

Model	RDDLZ-SC-GLM1927
Length	27mm
Width	19mm
Bore	4mm to 8mm
Rated Torque	1 N.m
Allow Eccentricity	0.12mm
Allowable Deflection Angle	1.5∠°
Allowable Axial Deviation	±0.18
Allowable Speed	10000 RPM
Static Torsional Stiffness	700N.m/rad
Moment of Inertia	9.6 x 10^-7
Weight	18g
Certificate	ISO9001, REACH, RoHS
Warranty	12 Months

Shaft Coupling Bore 4mm to 8mm Dimension (unit: mm)

d1/d2 Inner Diameter Size	Φd	L	LF	LP	S	φd3	F	M	Tightening Torque
3-4-4.5-5-6-6.35-7-8	19	27	9.1	5.2	1.8	8.5	3.9	M2.5	1 N.m

Details

Keyway

Shaft Diameter	Keyway Standard Machining Dimensions				Keyway Size
d1/d2	b		t		(bXh)
d1/d2	Width of groove	Tolerance	Depth of groove	Tolerance	(bXh)
φ6~φ7.9	2	±0.0125	1	±0.10	2x2
φ8~φ10	3	±0.0125	1.4		3x3
φ10.1~φ12	4	±0.0150	1.8		4x4
φ12.1~φ17	5		2.3		5x5
φ17.1~φ22	6		2.8		6x6
φ22.1~φ30	8	±0.0180	3.3	±0.20	8x7
φ30.1~φ38	10	±0.0180	3.3		10x8
φ38.1~φ44	12	±0.0215	3.3		12x8
φ44.1~φ50	14		3.8		14x9
φ50.1~Ф58	16		4.3		16x10
φ58.1~φ65	18		4.4		18x11

Keyway Machining Standard Drawing

Tips: Structure of diaphragm coupling

Diaphragm coupling is a metal flexible coupling, which is a transmission device that uses a metal elastic diaphragm as a flexible element to transmit torque. Its main features: large torque transmission capacity, diaphragm deformation to absorb the misalignment of the unit, no relative movement between the parts, no wear, no noise, long vibration damping life, and no need for lubrication. The torsional stiffness and critical speed can be adjusted by changing the outer diameter or wall thickness of the intermediate section, thereby improving the torsional vibration characteristics of the unit.

The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves. The diaphragm is fastened to the sleeve with a pin and generally will not loosen or cause backlash between the diaphragm and the sleeve. Some manufacturers provide two diaphragms, and some provide three diaphragms, with one or two rigid elements in the middle, and the two sides are connected to the shaft sleeve. The difference between the single diaphragm coupling and the double diaphragm coupling is the ability to handle various deviations. In view of the complex bending of the diaphragm, the single diaphragm coupling is not suitable for eccentricity. The double diaphragm coupling can bend in different directions at the same time to compensate for eccentricity.

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