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BS Series Ball Screw Bearings

The balls of the BS series ball screw bearings are made of high-hardness and wear-resistant steel and processed by ultra-precision grinding. The surface roughness is extremely low and the dimensional deviation is minimal. They fit closely with the screw and nut raceways to ensure smooth rolling and effectively reduce friction losses.

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	Type	Main dimensions			Rated load		Rated speed
					Dynamics	Static	Speed limit
Mail		d[mm]	D[mm]	B[mm]	C[kN]	C₀[kN]	[r/min]
	BS100150TN...-2RZ-P4 SU	100	150	22	69.5	173.0	2800.0
	BS75110TN1-2RZ-P4 SU	75	110	15	35.5	83.0	4000.0
	BS60120TN1-2RZ-P4 SU	60	120	20	61.0	120.0	3800.0
	BS55120TN1-2RZ-P4 SU	55	120	20	60.0	116.0	4000.0
	BS55100TN1-2RZ-P4 SU	55	100	20	40.5	81.5	5000.0
	BS5590TN1-2RZ-P4 SU	55	90	15	32.5	65.5	5300.0
	BS50100TN1-2RZ-P4 SU	50	100	20	58.5	104.0	4600.0
	BS45100TN1-2RZ-P4 SU	45	100	20	58.8	104.0	4600.0
	BS4575TN1-2RZ-P4 SU	45	75	15	28.5	52.0	6500.0
	BS4090TN1-2RZ-P4 SU	40	90	20	50.0	83.0	5300.0
	BS4072TN1-2RZ-P4 SU	40	72	15	28.0	49.0	7000.0
	BS3572TN1-2RZ-P4 SU	35	72	15	30.0	50.0	7000.0
	BS3072TN1-2RZ-P4 SU	30	72	15	31.0	54.0	7000.0
	BS3062TN1-2RZ-P4 SU	30	62	15	26.0	39.0	8000.0
	BS2562TN1-2RZ-P4 SU	25	62	15	28.5	41.5	8000.0
	BS2047TN1-2RZ-P4 SU	20	47	15	19.3	25.0	11000.0
	BS1747TN1-2RZ-P4 SU	17	47	15	21.5	27.0	11000.0
	BS1547TN1-2RZ-P4 SU	15	47	15	21.5	27.0	11000.0
	BS100150TN...-P4 SU	100	150	22	69.5	173.0	2800.0
	BS75110TN1-P4 SU	75	110	15	35.5	83.0	4000.0

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Dentail

Precision Ball Components：The balls of the BS series ball screw bearings are made of high-hardness and wear-resistant steel and processed by ultra-precision grinding. The surface roughness is extremely low and the dimensional deviation is minimal. They fit closely with the screw and nut raceways to ensure smooth rolling and effectively reduce friction losses.
Reinforced Screw Design：The screw usually selects high-strength alloy materials and is formed by advanced forging processes. The thread part undergoes multiple processes such as fine turning and grinding. The tooth profile accuracy is high and the surface hardness is uniform. It has excellent axial load-bearing capacity and can stably transmit power to drive the precise displacement of the load.
Optimized Nut Structure：The internal structure of the nut is optimized according to the ball circulation path. It adopts a special ball return groove design and cooperates with a high-strength cage to accurately guide the cyclic movement of the balls. It not only ensures the smooth running of the balls but also can bear a certain radial force to maintain the balance and stability of the entire transmission system.

High-precision Positioning：With the high-precision processing and precise cooperation of each component, the axial clearance is extremely small, enabling ultra-high-precision positioning control. It is widely used in fields with stringent precision requirements, such as CNC machine tools and precision measuring equipment, meeting the needs of precision machining and precision detection.
High-rigid Support：High-quality materials and reasonable structures endow it with strong axial rigidity. It can effectively resist deformation under heavy-duty working conditions to ensure the stability of the mechanical structure. At the same time, it has a certain radial rigidity to cope with complex force environments and ensure the reliable operation of the equipment.
Efficient Transmission Performance：The low-friction ball screw transmission mechanism, compared with traditional screw-nut pairs, greatly improves the transmission efficiency and reduces energy losses. During long-term continuous operation, it can significantly reduce the equipment energy consumption and improve the energy utilization rate.

Application

The bearings can be used in the following industries

Machine Tool Industry：It is a key transmission component of various advanced machine tools, such as machining centers and CNC boring and milling machines. It achieves the precise feed movement of tools or workpieces to help machine high-precision complex parts.
Automation Equipment：In industrial robots, the linear modules of automated production lines and logistics handling equipment, etc., it ensures the fast, precise and stable movement of moving parts to improve production and logistics efficiency.
Precision Instrument Field：Used in precision instruments such as coordinate measuring machines and the precision focusing mechanism of astronomical telescopes, it provides precise driving for high-precision manipulation in the microscopic or macroscopic fields, meeting high-end needs such as scientific research and observation.