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Double Nut DFU Series Ball Screw

Home · Products · Ball Screw · Double Nut DFU Series Ball Screw
  • Double Nut DFU Series Ball Screw
Double Nut DFU Series Ball Screw

Double Nut DFU Series Ball Screw

The core advantage of the DFU series dual-nut ball screws stems from their unique dual-nut preload structure. It is specifically designed for stable and reliable precision transmission in automated equipment requiring medium to heavy loads, high rigidity, and precise positioning.

Inquiry
PREV: Flange Type SFU Series Ball Screw Next: C5 Grinding / Rolled Ball Screw

Technology

Characteristics DFU Double Nut Series Traditional single-nut ball screws
Axial clearance Preload elimination enables zero backlash Typically exhibit slight backlash
System rigidity Exceptionally high rigidity with superior deformation resistance Generally
Load capacity Enhanced load capacity for medium to heavy duty applications Relatively low
Space requirements Internal circulation design for compact structure Depends on specific type
Suitable applications Suitable for demanding sectors including precision machine tools, automated equipment, and industrial robotics Suitable for applications with moderate precision and rigidity requirements

Core Advantages at a Glance:
High Rigidity, Zero Backlash:Applying preload between the two nuts completely eliminates axial clearance, achieving backlash-free transmission and significantly improving system rigidity. This allows it to maintain extremely high positioning stability even under bidirectional loads.

Higher Load Capacity and Longer Life: Compared to single-nut structures, the dual-nut design significantly increases rated load capacity and lifespan by increasing the number of load-bearing balls.

High Precision and Sensitivity: Utilizing an internal circulation design, the compact structure ensures high precision and enables micro-feeding accurate to 0.1 micrometers. Its drive torque is only about one-third that of a sliding screw, resulting in sensitive and efficient movement.

Typical Applications:
Thanks to the above advantages, the DFU series is particularly suitable for:

Feed axes of high-precision CNC machine tools.

Semiconductor manufacturing equipment and precision testing instruments.

Key transmission joints of industrial robots.

Modules that require precise positioning in automated production lines.

Parameters

Model No. d l Da Dimension Load Rating Rigidity Weight
D A B L W H X Q n Ca(kgf) Coa(kgf) Kgf/μm Kg
DFU1604-4 16  4  2.381  28  48  10  80  38  40  5.5  M6 1x4 973  2406  43  0.308 
DFU1605-4 5  3.175  28  48  10  100  38  40  5.5  M6 1x4 1380  3052  44  0.27 
DFU1610-3 10  3.175  28  48  10  118  38  40  5.5  M6 1x3 1103  2401  35  0.33 
DFU2004-4 20  4  2.381  36  58  10  80  47  44  6.6  M6 1x4 1066  2987  51  0.48 
DFU2005-4 5  3.175  36  58  10  101  47  44  6.6  M6 1x4 1551  3875  53  0.512 
DFU2504-4 25  4  2.381  40  62  10  80  51  48  6.6  M6 1x4 1180  3795  60  0.548 
DFU2505-4 5  3.175  40  62  10  101  51  48  6.6  M6 1x4 1724  4904  62  0.532 
DFU2510-4 10  4.762  40  62  12  145  51  48  6.6  M6 1×4 2954  7295  67  0.808 
DFU3204-4 32  4  2.381  50  80  12  80  65  62  9  M6 1x4 1296  4838  71  0.956 
DFU3205-4 5  3.175  50  80  12  102  65  62  9  M6 1x4 1922  6343  74  0.946 
DFU3210-4 10  6.35  50  80  12  162  65  62  9  M6 1x4 4805  12208  82  1.278 
DFU4005-4 40  5  3.175  63  93  14  105  78  70  9  M8 1x4 2110  7988  87  1.486 
DFU4010-4 10  6.35  63  93  14  165  78  70  9  M8 1x4 5399  15500  99  2.18 
DFU5010-4 50  10  6.35  75  110  16  171  93  85  11  M8 1x4 6004  19614  117  3.052 
DFU5020-4 20  7.144  75  110  16  280  93  85  11  M8 1x4 7142  22588  126  4.200 
DFU6310-4 63  10  6.35  90  125  18  182  108  95  11  M8 1x4 6719  25358  139  4.175 
DFU6320-4 20  9.525  95  135  20  290  115  100  13.5  M8 1x4 11444  36653  152  8.362 
DFU8010-4 80  10  6.35  105  145  20  182  125  110  13.5  M8 1x4 7346  31953  156  4.806 
DFU8020-4 20  9.525  125  165  25  295  145  130  13.5  M8 1x4 12911  47747  187  16.66 
DFU10020-4 100  20  9.525  150  202  30  340  170  155  17.5  M8 1x4 14303  60698  222  26.4 

Drawings

Production Capacity

Cyclone Milling Machines

LWN160-6000mm Leistritz Cyclone milling machines imported directly from
Germany, the ball screw shaft precision can be C3, C5, and C7 the max length
can be 7000mm

Rolled Thread CNC Machines

PR-40CNC Profiroll rolled thread ball screw machines imported directly from
Germany the ball screw shaft precision can be C5, C7 -C10

Rolled Thread CNC Machines

ST-20.2 and ST-347.7 rolled thread ball screw machines from TaiWan.
The ball screw shaft precision can be C7 - C10

Ball Screw Assembly Workshop

We conduct nut assembly in a constant temperature workshop,  all workers
having decades of work experience and zero clearance between the screw
and nut.

Ball Screw Assembly Workshop

One ball screw shaft matches one ball screw nut. Because each ball screw
shaft has a very tiny different tolerance. There are dozens of different
ball sizes for different screw shaft.
Our ball screw shaft and nut can be interchanged with the Taiwan
TBI ball screw shaft and nut very well.

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