Model EPB-V SERIES

The THK Ball Screw EPB V SERIES represents a pinnacle of engineering precision, designed as a DIN standard compliant component that delivers exceptional accuracy and reliability in linear motion applications. This series incorporates a compact, high-rigidity ball screw design with a precision-ground shaft, ensuring minimal deflection under load and maintaining tight tolerances even in high-speed operations. Key technical features include a large lead angle optimized for rapid traverse rates, preloaded ball nuts to eliminate backlash, and advanced sealing mechanisms that protect against contaminants like dust and chips, significantly extending service life in harsh environments. The EPB V SERIES is manufactured with high-carbon chromium bearing steel, heat-treated for superior surface hardness and core toughness, while the ball grooves are precision-ground to achieve C5 or higher accuracy grades as per DIN 69051 standards.

Performance advantages of the EPB V SERIES are evident in its efficiency and durability. The optimized recirculation system within the ball nut reduces friction and heat generation, enabling smooth motion with efficiencies exceeding 90%, which translates to lower energy consumption and reduced operational costs. Its high axial rigidity and preload adjustment capabilities ensure precise positional repeatability, making it ideal for applications demanding micron-level accuracy. Additionally, the series supports high permissible speeds and dynamic load ratings, allowing for sustained performance in continuous or cyclic duty cycles without degradation. Noise and vibration are minimized through precision manufacturing, contributing to quieter machinery operation and enhanced workplace safety.

In industrial machinery, the EPB V SERIES is widely deployed in CNC machining centers, where it drives axes for milling, drilling, and turning operations, providing the stiffness and accuracy needed for complex part fabrication. Automotive systems leverage these ball screws in electric power steering mechanisms, brake assembly lines, and engine valve control systems, where reliability and responsiveness are critical for safety and efficiency. For precision equipment, this model excels in semiconductor manufacturing apparatus, such as wafer handling robots and photolithography stages, as well as in medical devices like MRI scanners and automated laboratory instruments, where smooth, contamination-resistant motion is essential. By meeting DIN standards, the EPB V SERIES ensures compatibility and interchangeability in global markets, offering a robust solution that enhances productivity and reduces maintenance downtime across diverse sectors.

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Model No. Screw
shaft
outer
diameter

d
Lead


Ph
Ball
center-to-
center
diameter

dp

Outer
diameter

D
g6
Flange
diameter


D1
Overall
length


L1
Basic load rating
Dynamic
rating

Ca
Static
rating

C0a
mm mm mm mm mm mm kN kN
EPB 2505V-6 Ball Screw
25
5
25.75
40
62
66
12.1
22.6
EPB 2506V-6 Ball Screw
25
6
26
40
62
74
16.0
27.1
EPB 1605V-6 Ball Screw
16
5
16.75
28
48
65
9.3
13.1
EPB 2510V-4 Ball Screw
25
10
26
40
62
81
11.3
18.0
EPB 2512V-4 Ball Screw
25
12
26.25
40
62
91
14.0
21.2
EPB 2806V-6 Ball Screw
28
6
29
42
71
72
17.5
32.0
EPB 3204V-10 Ball Screw
32
4
32.5
50
80
81
12.3
31.9
EPB 3205V-6 Ball Screw
32
5
32.75
50
80
67
13.9
30.2
EPB 3205V-8 Ball Screw
32
5
32.75
50
80
78
17.8
40.3
EPB 3206V-8 Ball Screw
32
6
33
50
80
95
23.9
49.5