High-rigidity Disc Couplings - Jhan Rong Mechanical Ltd.

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Product

Couplings

Product Name

High-rigidity Disc Couplings

Model

PH56-276

Introduction

Features：

Body : A rigid enclosure integrally made with quality castings, with the gear shaft and holes being machined at once on a high-precision CNC machining center. With high degrees of parallelism, the bearings ensure fine gear meshing, high transmission efficiency and low noise during operation.

Gear : Large gears are made of S45oC or alloy steel undergoing high-frequency induction hardening process; small gears are made of SNCM21 materials going through carburizing process. To minimize loss of thrust, gears are developed with a spiral geometry to limit pressure angles to lower than 20 degrees. The gear geometry makes for improved strength and surface roughness, while helping to avoid losing concentricity during operation. Key shear stress can also be greatly reduced with this design.

Lubrication : Molybdenum disulfide lubricants are splashed onto parts of gears and bearings inside a reducer, to allow for easy maintenance and low consumption of lubricants.

Dimensions/Size Chart

Characteristic Table

【Unit : m/m】

Specification NO	D1D2／Tolerance* (H8)		H	K	B	E	F	L	M
Specification NO	min	max	H	K	B	E	F	L	M
PH-56	7	20	32	56	20	4.9	11	44.9	M5
PH-68	10	25	38	68	25	5.3	10	55.3	M6
PH-82	12	35	52	82	25	6	10	56	M6
PH-94	14	40	56	94	30	9.4	19	69.4	M8
PH-105	16	45	66	105	33	10	15	76	M8
PH-128	25	50	78	128	40	11	24	91	M10
PH-144	30	55	90	144	45	11.6	19	101.6	M10
PH-168	35	70	105	168	57.2	16.8	19	131.2	M14
PH-194	40	80	118	194	64.5	15	12	144	M16
PH-214	45	95	137	214	76.2	21.6	15	174	M16
PH-246	50	110	156	249	88.9	23.9	13	201.7	M20
PH-276	70	120	169	276	101.6	27.2	28	230.4	M24

【Material: Aluminum】

Specification NO	Conventional Torque (N.m)	Displacement (mm)	Declination （Degree）	Top Speed (rpm)	Spring Constant (N.m/rad)	Steering Spring Constant (kgf/mm)	Moment of Inertia (kg.m²)
PH-56	20	±0.8	1	20000	1.96 × 10⁴	4.1	1.23 × 10^-4
PH-68	45	±0.9	1	19000	2.45 × 10⁴	6	2 × 10^-4
PH-82	95	±1.0	1	17000	8.82 × 10⁴	9	6 × 10^-4
PH-94	175	±1.2	1	15000	15.7 × 10⁴	13	13 × 10^-4
PH-105	245	±1.4	1	12000	25.5 × 10⁴	16	22 × 10^-4
PH-128	440	±1.6	1	11000	44.1 × 10⁴	22.3	56 × 10^-4
PH-144	780	±1.8	1	10000	78.4 × 10⁴	31,3	110 × 10^-4
PH-168	1270	±2.5	1	9000	147 × 10⁴	36.2	270 × 10^-4
PH-194	2060	±2.7	1	8000	255 × 10⁴	45	520 × 10^-4
PH-214	3330	±3.3.	1	7500	323 × 10⁴	48	880 × 10^-4
PH-246	5290	±3.8	1	3400	431 × 10⁴	56	1750 × 10^-4
PH-276	6860	±4,0	1	3100	588 × 10⁴	60	3250 × 10^-4

【Features : High rigidity and torque, low inertia and backlash-free, suitable for precision positioning and transmission of servo motors, with telescopic and vibration-resistance functions】