RSK-lxz Flexible Pin & Bush Coupling with Brake Wheel No Lubrication Required-Jiangsu Rokang Heavy Industry Technology Co., Ltd.

Specification

Key Characteristics

Functional Integration, Space Saving

Combines the transmission connector and braking actuator into one unit, greatly simplifying the axial layout of the drive train, saving installation space, and reducing the difficulty and cost of finding extra space between the motor and gearbox to mount a separate brake wheel

Direct Braking, Fast Response

The brake wheel is mounted directly on the drive shaft. The braking torque generated by the brake acting on the wheel is applied directly to the transmission system, resulting in quick braking response without delays or losses from intermediate transmission links

Compact Structure, Easy Installation

Supplied as a single integrated component. The user only needs to align and connect it like a standard coupling, without the need for separate alignment of a brake wheel, simplifying the installation process

Inherits Advantages of Pin Couplings

Some Misalignment Compensation: Can compensate for small amounts of axial, radial, and angular misalignment

Cushioning and Vibration Damping: The elastic rings can absorb some vibration and shock

No Lubrication Required: Nylon pins and elastic rings do not require lubrication during operation

Electrical Insulation: Nylon material provides insulation

Primary Application Fields

Overhead Cranes, Gantry Cranes: Bridge travel mechanism, trolley travel mechanism, hoisting mechanism.

Jib Cranes (Tower Cranes, Portal Cranes): Slewing mechanism, luffing mechanism.

Belt Conveyors, Bucket Elevators: Input side of the drive drum.

Metallurgical Foundry Cranes: Hoisting and traversing mechanisms.

Other material handling equipment requiring frequent starts/stops and reliable braking.

Model	Nominal Torque (N·m)	Permissible rotational speed (rpm)	Shaft hole diameter (mm) d₁、d₂、 dz、	Shaft hole length (mm)			D。	D	B	B₁	S	Allowable compensation amount			Moment of inertia ()	Weight (kg)
				Y-shaped		J、J₁、Z-shaped						Axial	Radial	Angle direction
				L	L₁	L	mm
RSK-LXZ1	560	5600	20、22、24	52	38	52	200	120	85	42	2.5	±1	0.15	≤0°30'	2.18	11
			25、28	62	44	62
			30、32、35	82	60	82
RSK-LXZ2	1250	3750	30、32、35、38	82	60	82	200	160	85	40	2.5	±1	0.15	≤0°30'	2.45	14
			40、42、45、48	112	84	112
RSK-LXZ3	1250	2430	30、32、35、38	82	60	82	315	160	132	66	2.5	±1	0.15	≤0°30'	13.08	25
			40、42、45、48	112	84	112
RSK-LXZ4	2500	2430	40、42、45、48、50、56	112	84	112	315	195	132	66	3	±1.5	0.15	≤0°30'	16.6	40
			60、63	142	107	142
RSK-LXZ5	2500	1900	40、42、45、48、50、55、56	112	84	112	400	195	168	84	3	±1.5	0.15	≤0°30'	49.2	59
			60、63	142	107	142
RSK-LXZ6	3150	1900	50、55、56	112	84	112	400	220	168	84	3	±1.5	0.15	≤0°30'	57.6	69
			60、63、65、70、71、75	142	107	142
RSK-LXZ7	3150	1500	50、55、56	112	84	112	500	220	210	105	3	±1.5	0.15	≤0°30'	127.4	91
			60、63、65、70、71、75	142	107	142
RSK-LXZ8	6300	1900	60、63、65、70、71、75	142	107	142	400	280	168	84	4	±2	0.2	≤0°30'	161.7	88
			80、85	172	132	172
RSK-LXZ9	6300	1500	60、63、65、70、71、75	142	107	142	500	280	210	105	4	±2	0.2	≤0°30'	129.2	113
			80、85	172	132	172
RSK-LXZ10	11200	1500	70、71、75	142	107	142	500	320	210	105	4	±2	0.2	≤0°30'	156	156
			80、85、90、95	172	132	172
			100、110	212	167	212
RSK-LXZ11	11200	1220	70、71、75	142	107	142	630	320	265	132	4	±2	0.2	≤0°30'	314	187
			80、85、90、95	172	132	172
			100、110	212	167	212
RSK-LXZ12	16000	1220	80、85、90、95	172	132	172	630	360	265	132	5	±2	0.2	≤0°30'	328	326
			100、110、120、125	212	167	212
RSK-LXZ13	22400	1080	100、110、120、125	212	167	212	710	410	298	149	5	±2	0.2	≤0°30'	713	337
			130、140	252	202	252
RSK-LXZ14	35500	1080	110、120、125	212	167	212	710	480	298	149	6	±2.5	0.25	≤0°30'	849	458
			130、140、150	252	202	252
			160、170、180	302	242	302
RSK-LXZ15	35500	950	110、120、125	212	167	212	800	480	335	168	6	±2.5	0.25	≤0°30'	1231	504
			130、140、150	252	202	252
			160、170、180	302	242	302

Describe

Basic Structure

Brake Wheel Half-Coupling: This is its distinctive component. Typically made of cast steel to ensure sufficient strength and wear resistance. Its outer circumference is precision machined (turned and ground) to meet specified surface roughness, radial runout, and thickness tolerances to serve as the brake friction surface. The wheel rim often features cooling vents to improve heat dissipation during braking.

The Other Half-Coupling: A standard half-coupling body, typically made of cast iron or cast steel.

Pins and Elastic Rings: Similar to the RSK-lx type coupling, it uses nylon (polyamide) pins paired with elastic rings made of rubber or polyurethane. The pins transmit torque, while the elastic rings provide cushioning and compensation. This is a key difference from the RSK-lt type which uses rubber bushings.

Retainer Plates, Nuts, Washers: Used to secure the pin assembly.

Structural performance:

Nylon is used for elastic components, which has high strength and wear resistance, and is suitable for corrosive environments.

The outer surface of the steel brake wheel has undergone quenching treatment.

The operating temperature ranges from -20 ℃ to+70 ℃.

Key Characteristics

Functional Integration, Space Saving:

Direct Braking, Fast Response:

Compact Structure, Easy Installation:

Inherits Advantages of Pin Couplings:

Some Misalignment Compensation: Can compensate for small amounts of axial, radial, and angular misalignment.

Cushioning and Vibration Damping: The elastic rings can absorb some vibration and shock.

No Lubrication Required: Nylon pins and elastic rings do not require lubrication during operation.

Electrical Insulation: Nylon material provides insulation.

Primary Application Fields

The RSK-lxz type is the "Standard Coupling for Lifting and Transportation Machinery" and is used in almost all electrically driven cranes and conveyors:

Overhead Cranes, Gantry Cranes: Bridge travel mechanism, trolley travel mechanism, hoisting mechanism.

Jib Cranes (Tower Cranes, Portal Cranes): Slewing mechanism, luffing mechanism.

Belt Conveyors, Bucket Elevators: Input side of the drive drum.

Metallurgical Foundry Cranes: Hoisting and traversing mechanisms.

Other material handling equipment requiring frequent starts/stops and reliable braking.