Model BIF-V SERIES

THK’s BIF V SERIES Caged Ball Screw represents a significant advancement in precision linear motion technology, engineered specifically for applications demanding exceptional accuracy, rigidity, and long-term reliability. This model incorporates a unique caged ball design that fundamentally enhances performance by separating individual recirculating balls within a dedicated retainer. This construction eliminates ball-to-ball contact, drastically reducing friction, heat generation, and torque fluctuation. The result is a smoother, quieter, and more efficient operation compared to conventional ball screws, with a marked improvement in positional stability and consistency.

Key technical features of the BIF V SERIES underscore its high-performance capabilities. The caged ball mechanism not only minimizes vibration and noise but also substantially extends the component’s service life by preventing abrasive wear between the balls. This design allows for higher maximum operating speeds and faster accelerations, making it ideal for dynamic, high-cycle processes. Furthermore, the series is manufactured to exacting precision grades, ensuring minimal axial play and highly repeatable positioning. The robust construction provides superior rigidity and load capacity, capable of handling significant moment loads in multiple directions. Many models are also available with optional pre-load adjustments and various sealing solutions to exclude contaminants, ensuring reliable performance even in harsh industrial environments.

The performance advantages translate directly into tangible benefits for demanding sectors. In industrial machinery, the BIF V SERIES is indispensable for high-speed machining centers, CNC lathes, and industrial robots where precision, speed, and minimal downtime are critical. Its ability to maintain accuracy over millions of cycles enhances manufacturing quality and throughput. Within automotive production systems, these ball screws are deployed in precision assembly robots, automated welding equipment, and high-speed transfer lines, where their durability and resistance to shock loads ensure uninterrupted production. In the realm of precision equipment, the BIF V SERIES is the driving component of choice for semiconductor manufacturing apparatus, precision measuring instruments, and medical device automation. The exceptional smoothness and minimal vibration are paramount for achieving the micron-level accuracies required in these sensitive applications. By delivering a combination of high speed, unparalleled precision, and exceptional longevity, the THK BIF V SERIES Caged Ball Screw provides a foundational technology that boosts productivity, enhances product quality, and reduces total cost of ownership across a wide spectrum of advanced automation.

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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
BIF 4520V-5 Ball Screw
45
20
47
90
130
162
35.8
89.7
BIF 5010V-5 Ball Screw
50
10
51.75
93
135
103
32.1
88.1
BIF 5010V-7 Ball Screw
50
10
51.75
93
135
123
42.9
123.4
BIF 3216V-5 Ball Screw
32
16
33.75
74
108
139
25.9
56.5
BIF 3612V-5 Ball Screw
36
12
38
78
123
123
32.2
71.2
BIF 3610V-10 Ball Screw
36
10
37.75
75
120
171
50.1
126.5
BIF 3610V-7 Ball Screw
36
10
37.75
75
120
123
36.9
88.6
BIF 3610V-5 Ball Screw
36
10
37.75
75
120
111
27.6
63.3
BIF 3212V-7 Ball Screw
32
12
34
76
121
146
40.4
88.5
BIF 2806V-10 Ball Screw
28
6
28.75
55
85
104
17.5
49.2
BIF 3205V-5 Ball Screw
32
5
32.75
58
85
56
10.2
28.1
BIF 3205V-10 Ball Screw
32
5
32.75
58
85
86
18.5
56.3
BIF 3206V-5 Ball Screw
32
6
33
62
89
63
13.9
35.2
BIF 3206V-10 Ball Screw
32
6
33
62
89
99
25.2
70.3
BIF 2508V-5 Ball Screw
25
8
26.25
58
85
82
15.8
32.9
BIF 2508V-7 Ball Screw
25
8
26.25
58
85
98
21.1
46
BIF 2510V-5 Ball Screw
25
10
26.25
58
85
100
15.8
32.9
BIF 2810V-3 Ball Screw
28
10
29.75
65
106
88
15.6
29.4
BIF 3210V-5 Ball Screw
32
10
33.75
74
108
100
26
56.2
BIF 3210V-7 Ball Screw
32
10
33.75
74
108
120
34.8
78.6
BIF 3210V-10 Ball Screw
32
10
33.75
74
108
160
47.3
112.3
BIF 3212V-5 Ball Screw
32
12
34
76
121
117
30.2
63.2
BIF 2508V-10 Ball Screw
25
8
26.25
58
85
130
28.7
65.7
BIF 1605V-5 Ball Screw
16
5
16.75
40
60
56
7.4
13.9