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7603 Series Ball Screw Bearings

The balls of the 7603 series ball screw bearings are carefully selected from high-quality steel and finely ground. They have a mirror-like smooth surface and extremely high dimensional accuracy, minimizing friction with the screw and nut raceways to achieve smooth transmission.

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Type	Main dimensions	Rated load	Rated speed
760305TN1-P4 SU	25	62	17	28.5	41.5	9000.0
760305TN1 2RZ-P4 SU	25	62	17	28.5	41.5	9000.0
760304TN1-P4 SU	20	52	15	24.5	32.0	11000.0
760304TN1 2RZ-P4 SU	20	52	15	24.5	32.0	11000.0

Type

Main dimensions

Rated load

Rated speed

Dynamics

Static

Speed limit

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d[mm]

D[mm]

B[mm]

C[kN]

C₀[kN]

[r/min]

760305TN1-P4 SU

760305TN1 2RZ-P4 SU

760304TN1-P4 SU

760304TN1 2RZ-P4 SU

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High-quality Balls：The balls of the 7603 series ball screw bearings are carefully selected from high-quality steel and finely ground. They have a mirror-like smooth surface and extremely high dimensional accuracy, minimizing friction with the screw and nut raceways to achieve smooth transmission.
Optimized Screw and Nut：The screw is forged from high-strength alloy steel, and its threads are precisely machined with regular tooth profiles and high surface hardness, ensuring stable axial force transmission. The nut has an ingenious design, and its internal structure perfectly matches the balls. It can effectively constrain the movement trajectory of the balls and share a certain amount of radial load.
Efficient Reverse Device：Equipped with advanced reverse devices, such as circulating 插管 or end cap structures, it skillfully guides the balls to cycle back and forth in the closed raceway, preventing ball jamming and ensuring transmission continuity, adapting to high-speed operation requirements.
Ultra-high Precision：The precise cooperation of all components keeps the axial clearance within a very small range, providing outstanding positioning accuracy. It provides precise displacement control for precision machine tools, measuring equipment, etc., ensuring high precision in machining and measurement.
Strong Load-bearing Capacity：Thanks to the optimized structure and high-quality materials, it can handle axial loads with ease and also has considerable radial load-bearing capacity. It can stably support mechanical parts under heavy-duty working conditions, enhancing equipment reliability.
Energy-saving and Low-consumption：The low-friction ball transmission mechanism, compared with traditional screw-nut pairs, significantly reduces energy consumption during operation. The long-term energy-saving effect is remarkable, conforming to the concept of sustainable development.

Application

The bearings can be used in the following industries

Precision Machine Tools：As the core transmission elements of precision machine tools such as machining centers and CNC grinders, it accurately drives the movement of tools or workpieces to help create highly precise parts.
Automated Production Lines：In the joints of industrial robots and the linear modules of automated equipment, it ensures the fast and precise positioning of moving parts, improving production efficiency and product consistency.
Precision Instruments and Meters：Used for focusing optical instruments and driving the stage of electron microscopes, it meets the stringent requirements for high precision and stable transmission in microscopic manipulation.