RSK-lt Easy Installation elastic sleeve pin coupling with pins and elastic bushings-Jiangsu Rokang Heavy Industry Technology Co., Ltd.

Specification

Key Characteristics:

Simple Structure, Low Cost

Low manufacturing cost and price

No Lubrication Required, Easy Maintenance

Possesses Some Compensation and Damping Ability

Easy Installation

The rubber elastic bush can provide a degree of electrical insulation

Primary Application Fields:

Connections between motors and driven machines in fans, pumps, and other general machinery (most common)

Light conveyors, mixers, agricultural machinery

Small-to-medium compressors, generator sets

Various light industrial machinery where cost is a sensitive factor

Model	Nominal Torque (N·m)	Permissible rotational speed (rpm)		Shaft hole diameter (mm) d₁、d₂、dz		Shaft hole length (mm)			D	A	S	Allowable compensation amount		weight (kg)	Moment of Inertia (kg.m² )
						Y-shaped	J、J、Z-shaped					Radial (mm)	Angle direction
		iron	steel	iron	steel	L	L₁	L		(mm)
RSK-LT1	6.3	6600	8800	9	9	20	14	—	71	18	3	0.2	1°30'	0.82	0.0005
				10、11	10、11	25	17	—
				12	12、14	32	20	—
RSK-LT2	16	5500	7600	12、14	12、14	32	20	—	80	18	3	0.2	1°30'	1.20	0.0008
				16	16、18、19	42	30	42
RSK-LT3	31.5	4700	6300	16、18、19	16、18、19	42	30	42	95	35	4	0.2	1°30°	2.20	0.0023
				20	20、22	52	38	52
RSK-LT4	63	4200	5700	20、22、24	20、22、20	52	38	52	106	35	4	0.2	1°30'	2.84	0.0037
					25、28	62	44	62
RSK-LT5	125	3600	4600	25、28	25、28	62	44	62	130	45	5	0.3	1°30'	6.05	0.012
				30、32	30、32、35	82	60	82
RSK-LT6	250	3300	3800	30、35、38	32、35、38	82	60	82	160	45	5	0.3	1°00'	9.57	0.028
				40	40、42	112	84	12
RSK-LT7	500	2800	3600	40、42、45	40、42、45、48	112	84	112	190	45	5	0.3	1°00'	14.01	0.055
RSK-LT8	710	2400	3000	45、48、50、55	45、48、50、55、56	112	84	12	224	65	6	0.4	1°00'	23.12	0.1340
					60、63	142	107	142
RSK-LT9	1000	2100	2850	50、55、56	50、55、56	112	84	112	250	65	6	0.4	1°00'	30.69	0.2130
				60、63	60、63、65、70、71	142	107	42
RSK-LT10	2000	1700	2300	63、65、70、71、75	63、65、70、71、75	142	107	142	315	80	8	0.4	1°00'	61.40	0.660
				80、85	80、85、90、95	172	132	172
RSK-LT11	4000	1350	1800	80、85、90、95	80、85、90、95	172	132	172	400	100	10	0.5	0°00'	120.70	2.122
				100、110	100、110	212	167	212
RSK-LT12	8000	1100	1450	100、110、120、125	100、110、120、125	212	167	212	475	130	12	0.5	0°00'	210.34	5.39
					130	252	202	252
RSK-LT13	16000	800	1150	120、125	120、125	212	167	212	600	180	14	0.6	0°00'	419.36	11.58
				130、140、150	130、140、150	252	202	252
				160	160、170	302	242	302

Describe

It is a non-metallic flexible element coupling that transmits torque through pins and elastic bushings.

Its core working principle utilizes the compressive deformation of rubber (or polyurethane) elastic bushings to transmit torque, and leverages their elasticity to compensate for misalignment, absorb vibration, and shock. With its simple structure, it is one of the most widely used couplings in the field of small-to-medium power, medium-to-low speed transmission, often referred to as the "Standard Coupling".

The structure of the Type LT coupling is very simple, consisting mainly of the following components:

Two Half-Couplings: Typically made of cast iron (HT200) or cast steel (ZG270-500), resembling flanges with a ring of pin holes around the periphery.

Elastic Bush (Bushing): The core component. Usually made of rubber or polyurethane, it is a cylindrical shape with a flange. It is installed in the pin holes of the driven half-coupling. The pin passes through the central hole of the elastic bush, thereby flexibly connecting the two half-couplings.

Retainer Plate (Optional): Used to axially secure the elastic bushes and prevent them from falling out.

Structural performance:

Due to the gap between the elastic sleeve and the circular hole on the flange of the half coupling, as well as the deformation of the elastic sleeve, the coupling has a certain degree of compensation for relative displacement and shock absorption performance.

Key Characteristics:

Simple Structure, Low Cost

Few parts, mature manufacturing process, very low manufacturing cost and price, offering outstanding economy.

No Lubrication Required, Easy Maintenance

Contains no friction pairs with relative sliding, requires no addition of oil or grease, qualifying as a maintenance-free coupling (only requiring periodic inspection).

Possesses Some Compensation and Damping Ability

Easy Installation

The rubber elastic bush can provide a degree of electrical insulation

Primary Application Fields:

The LT type is a classic "General-Purpose Economical" coupling, suitable for non-demanding applications with low requirements for transmission precision and dynamic performance, moderate power, and relatively clean environments, such as:

Connections between motors and driven machines in fans, pumps, and other general machinery (most common).

Light conveyors, mixers, agricultural machinery.

Small-to-medium compressors, generator sets.

Various light industrial machinery where cost is a sensitive factor.