Name: RSK-BJDT Fixed ball cage Constant Velocity Synchronous Universal Coupling large extension for Metallurgy
Rating: 5 (99 reviews)

Specification

Operating angle≤18°

Large expansion type

Linking with flange hub

Fundamental Specifications：

Type	Diagram	Nominal Torque (N·m)	Fatigue Torque (N·m)	Allowable Operating Angle			The expansion Δ	The Moment of Inertia GD³ J × 10⁻³ (kg·m²)
Type	Diagram	Nominal Torque (N·m)	Fatigue Torque (N·m)	In rotation	At rest		The expansion Δ	L=1000	Every 100 more of the length
BJ75DT	Figure 1	1520	588	14°		16°	100	25.3	0.49
BJ95DT	Figure 1	2500	1127	14°		16°	100	52.2	0.49
BJ125DT	Figure 1	5782	2744	16°		18°	100	186	0.75
BJ150DT	Figure 1	11564	4704	16°		18°	110	396	1.04
BJ175DT	Figure 2	15680	6713	16°		18°	110	718	8.5
BJ200DT	Figure 2	23912	11172	16°		18°	110	1420	17.8
BJ225DT	Figure 2	29694	14700	16°		18°	140	2277	17.8
BJ250DT	Figure 2	42238	20678	18°		20°	140	3905	54
BJ300DT	Figure 2	63112	29106	18°		20°	140	7195	54

The main dimensions：

Type	Diagram	Dw	D	D1	D3	D4	J	L(min)
BJ75DT	Figure 1	80	85	55	22	50	26	640
BJ95DT	Figure 1	95	100	65	27.5	60	32	710
BJ125DT	Figure 1	125	130	90	36.75	76	42	840
BJ150DT	Figure 1	146	151	105	46	76	50	970
BJ175DT	Figure 2	165.1	170	120	52	89	60	1080
BJ200DT	Figure 2	190	196	140	60	102	65	1120
BJ225DT	Figure 2	212	218	160	66	102	70	1140
BJ250DT	Figure 2	230	238	180	76	140	80	1160

Remarks :X₁,X₂ are the lengths of the shaft ends decided by customers.

The characteristic and usage

The adjustment of the installing distance and the axial expansion are realized through the sliding spline fit in the universal joint, The expansion can be adjusted according to the special requirement.It is mainly used for the driving of the pinch roll, scrubbing roll sealing roll ,finishing tension roll and squeezing roll on the metallurgical equipment.

The symbolizing example:BJ125DT1000

BJ:BJ Type

125:The specification is 125

D:D Type

T:The expansion of the intermediate shaft spline

1000:The length is1000

Describe

The Fixed ball cage Constant Velocity Synchronous Universal Coupling large extension is a transmission component that combines innovative design and excellent performance. Its exquisite structure is composed of a star sleeve (inner raceway), a ball shell (outer raceway), a steel ball, a clamp, a dust cover and a cage. On the inner wall of the cylindrical shell and the outside of the star sleeve, the unique cylindrical straight groove design, with the steel balls precisely placed therein, combined with the stable positioning of the steel balls by the cage, and the six well-lubricated transmission steel ball raceways on the inner and outer ball seats, ensure stable and efficient power transmission.

When working, the power starts from the transmission shaft and reaches the output end smoothly through the conduction of the steel balls and the spherical shell. No matter how the angle between the shafts changes under complex working conditions, the coupling can ensure the synchronization of the input shaft and the output shaft speed with its ingenious structure to achieve smooth and accurate power transmission.

In terms of performance, it has all the advantages. High transmission efficiency is its significant highlight. The power loss changes almost linearly in the range of shaft inclination. Under normal working conditions, the transmission efficiency can reach 0.98. With excellent angular compensation capability, the angle between the two shafts can be flexibly changed from 0° to 45°, and it can cope with various installation and operation environments. At the same time, it also has good telescopic performance, which can effectively absorb the vibration and impact during the operation of the equipment and reduce system losses. In addition, the coupling rotation channel is processed with high precision, and each component is a uniform rotating body. After strict dynamic balancing experiments, high dynamic balancing accuracy is guaranteed, and the operation is stable and reliable.

In the automotive field, it is used for front-wheel drive vehicle half-axles and four-wheel drive vehicle drive shafts to ensure smooth power output; in industrial machinery, such as machine tools, heavy machinery, etc., it provides solid support for the stable operation of equipment. With its compact structure, easy installation, good sealing, and long life, the retractable fixed ball cage type synchronous universal drive shaft coupling has become an ideal choice for power transmission in many industries.