Pin & Bush Couplings RLB

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Key Characteristics of the Pin & Bush Couplings RLB

The RINGFEDER^® Pin & Bush Couplings of the RLB series are tried-and-tested flexible pin couplings that are characterized by simple handling, easy installation and a long service life. It also known as "Khớp nối bulong đai ốc RLB".

The Couplings offer a number of practical advantages:
- The RLB coupling is also available with a spacer for larger shaft distances - for example in pump drives.

- Rubber bushes are suitable for installation both directly between motor and gearbox and on the driven side of a machine.

- Easy replacement of the wear elements without removing the hubs.

Pin & Bush Couplings of the RINGFEDER® RLB series are two main types:

- Type BWB – Standard version with straight bores and keyways.
- Type BSB – Spacer version for applications requiring larger shaft distances, ideal for pump or fan drives.

Product Specifications of Pin & Bush Couplings of the RINGFEDER^® RLB series

Fail-Safe Shaft-Shaft Connection with Pins and Elastic Rubber Elements
- 27 Sizes
- Bore Diameter d₁/d₂: 11-600 mm (0.433-23.622 inch)
- Outer Diameter D₁: 105-2,000 mm (4.134-78.74 inch)
- Total Length L₁: 94-1,332 mm (3.7-52.441 inch)
- Torque T_KN: 95-1,200,000 Nm (70.07-885,074.58 ft·lb)

Pin & Bush Couplings RLB Catalogue	RLB Installation Introduction

Size Coupling	T_KN [Nm]	n_max	Dimenssions [mm]				Gw [kg]
Size Coupling	Rubber	1/min	d1/d2 Min.	d1 max	D1	L1	Gw [kg]
RLB 105	95	7200	11	30	105	94	2
RLB 116	143	6100	12	39	116	94	2.6
RLB 125	162	5500	14	45	125	104	3.1
RLB 144	315	4900	18	50	144	114	4.3
RLB 162	525	4500	22	60	162	124	7.5
RLB 178	640	3800	24	70	178	144	10
RLB 198	1241	3400	28	80	198	164	13
RLB 228	2005	3000	28	90	228	187	18
RLB 252	3056	2700	38	105	252	207	24
RLB 285	4584	2400	48	115	285	227	35
RLB 320	6112	2100	55	125	320	257	51
RLB 360	8881	1900	65	135	360	288	73
RLB 400	12032	1700	75	160	410	328	101
RLB 450	18621	1500	85	180	450	368	137
RLB 500	25783	1350	95	200	500	408	180
RLB 560	31035	1200	95	225	560	446	278
RLB 630	42017	1050	100	250	630	486	365
RLB 710	74962	950	100	260	710	527	516
RLB 800	99981	850	100	280	800	587	691
…	…	…	…	…	…	…	…

>>> See full RLB BWB dimensions and RLB BSB specifications here

Application of Pin and Bush Couplings RLB

The RLB series is designed for heavy-duty, industrial-grade coupling tasks, such as:
- Crane drives
- Heavy-duty gearboxes
- Escalators
- Large-scale fan drives
- Conveyor systems
- Cement, steel, mining industries
Essentially, where a reliable, high-performance coupling between shafts is required under challenging conditions (vibration, misalignment, shock loads) the RLB series shines.

Why Choose Pin & Bush Couplings RLB?

- Reliable performance for continuous industrial use.
- Elastic elements absorb misalignment and protect the drive system.
- Easy maintenance – wear parts can be replaced without removing the hubs.
- Wide range of sizes and torque capacities for different drive setups.
- Durable, efficient, and versatile for demanding applications.

Dai Hong Phat Corp specializes in the supply of genuine Ringfeder Pin & Bush Couplings RLB throughout Vietnam.

Our products are brand new, complete with certificates and clear origins.
With 15 years of industry experience, Dai Hong Phat Corp is committed to providing high-quality Ringfeder RLB coupling at competitive prices. We maintain a substantial inventory to ensure the availability of goods in large quantities.

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