• Brands
  • Company
  • Contact
EN / UK
Type Code Seach | *NOT READY*
#CODE
Keyword suggestions
Part number suggestions
Discontinued Products

Ball screws / block nut / diameter 15, 20, 25 / pitch 5, 10 / C10 / steel / phosphated / 58-62HRC

Ball screws / block nut / diameter 15, 20, 25 / pitch 5, 10 / C10 / steel / phosphated / 58-62HRC
View the FAQ (10)

MISUMI

MISUMI

[Features] Rolled ball screw that can be mounted directly on a table. -Shaft diameters are ø15, 20 and 25.

Part Number

Once your search is narrowed to one product,
the corresponding part number is displayed here.

Dimensional Drawing

BSBR (K) 1505·1510

View X-X


* The dimensions in () are for BSSR(K)1510.
* Collar included (1 pc.) "M" Material: EN 1.1191 Equiv. "S" Surface Treatment: Black Oxide

BSBR (K) 2005·2010

 

View X-X

PTolerance
8 to 10

0

-0.009

11·12

0

-0.011

* The dimensions in () are for BSSR(K)2010.
* Collar included (1 pc.) "M" Material: EN 1.1191 Equiv. "S" Surface Treatment: Black Oxide

BSBR (K) 2505·2510
 

View X-X

PTolerance
10

0

-0.009

11 to 15

0

-0.011

* The dimensions in () are for BSSR(K)2510.
* Collar included (1 pc.) "M" Material: EN 1.1191 Equiv. "S" Surface Treatment: Black Oxide
Nut
Type		TypeAccuracy
Grade		Shaft Dia.LeadScrew ShaftNut
StandardF, P Configurable[M] Material[H] Hardness[S] Surface Treatment[M] Material[H] Hardness[S] Surface Treatment
Block NutBSBRBSBRKC1015·20·255·10EN 1.1203 Equiv.Induction hardened
56 to 62HRC		Phosphate Conversion CoatingEN 1.7264 Equiv.Carburized
58 to 62HRC		Phosphate Conversion Coating

Specification Table

Part Number—L—F—P
BSBR1505
BSBRK2510		—
—		200
370		    
—F40—P15
Nut
Type		Accuracy
Grade		Part Number1 mm IncrementsYBall
Dia.		Ball
Center Dia.		Screw Root Dia.Number of CircuitsBasic Load RatingAxial Play
Clearance		Twisting
Direction
TypeScrew Shaft O.D.LeadL* F* PC (Dynamic) kNCo (Static) kN
Block
Nut		C10BSBR1505150 to 12001510L−673.17515.8(12.5)2.5 turns, 1 row5.110.50.10 or LessRight
BSBRK15 to 306 to 10L− (52+F)
BSBR101510L−67
BSBRK15 to 306 to 10L− (52+F)
BSBR2005200 to 12002012L−8720.8(17.5)6.214.7
BSBRK20 to 368 to 12L− (67+F)
BSBR102012L−874.762521(16.3)10.622.70.15 or less
BSBRK20 to 368 to 12L− (67+F)
BSBR2505200 to 15002715L−1183.17525.8(21.8)6.618.70.10 or Less
BSBRK27 to 4510 to 15L− (91+F)
BSBR10250 to 15002715L−1186.3526.8(20.3)2.5 turns, 2 rows27.576.30.20 or less
BSBRK27 to 4510 to 15L− (91+F)
* F and P are configurable for BSBRK only. [!] F ≤ P × 3. [!] Y (Nut Motion Range) > (Nut Overall Length). kgf = N × 0.101972

Alterations

Part Number—L— F — P —(FC·MC, etc.)
BSBR2505—700    —RLC
AlterationsCodeSpec.  AlterationsCodeSpec.
No Machining on Both Shaft Ends

[ ! ]A nut is mounted to the temporary shaft before the product is shipped.		WNCDoes not machine any of the both shaft ends.
Ordering Code WNC-S20-F80
[ ! ] Annealing may lower hardness on the annealed area + 25 mm fore and aft.
　
[ ! ]S+F ≤ L/2 [ ! ]L－ (S+F) ≤ Y+50
[ ! ] On the annealed area + 25 mm fore and aft, axis run-out may be larger than indicated by the Catalog standard.
　		Wrench Flats on Fixed Side

Incomplete Hardened Area
 
 ABCD
BSBR15□□100
－0.2		75(22)
BSBR20□□160
－0.25		96(25)
BSBR25□□180
－0.25		107(27)
SZCAdds wrench flats on the fixed side shaft end.
Ordering Code SZC
[ ! ] Ball bearings will fall out, if the ball nut
crosses the wrench flats.
No Machining on Support Side Shaft End
NCNo machining added on the support side shaft end.
Ordering Code NC
Ball Nut Orientation Reversed
   (Support Side) (Fixed Side)
Standard
Change
RLCChanges the nut direction.
Ordering Code RLC		Keyway on Fixed Side Shaft End

KCAdds a keyway on the fixed side shaft end.
KC = 1 mm Increments
Ordering Code KC20
" ! "3 ≤ KC ≤ P × 3 KC ≤ F－1 (BSBR15□□)
" ! "4 ≤ KC ≤ P × 3 KC ≤ F－1 (BSBR20□□)
" ! "5 ≤ KC ≤ P × 3 KC ≤ F－1 (BSBR25□□)
No Retaining Ring Groove on Support Side Shaft End


 		RNCNo Retaining Ring Groove on Support Side Shaft End.
Ordering Code RNC
[NG] Combination with FC is not available.		Keyway on Fixed Side Shaft End


 		KLCThe position of keyway on fixed side shaft end can be specified.
(Keyway dimensions are the same as KC.)
K, S = 1 mm Increments
Ordering Code KLC-K20-S3
" ! "4 ≤ K+S ≤ P × 3 K+S ≤ F－2 (BSBR15□□)
" ! "5 ≤ K+S ≤ P × 3 K+S ≤ F－2 (BSBR20□□)
" ! "6 ≤ K+S ≤ P × 3 K+S ≤ F－2 (BSBR25□□)
Change Support Side Shaft End Machining




 		GCChanges the machining on the support side.
Q is selectable from 8, 10 or 12　
Q is selectable from 8, 10 or 12 (BSBR15□□)
Q is selectable from 10, 12 or 15 (BSBR20□□)
Q is selectable from 10, 12, 15 or 20 (BSBR25□□)
G = 1 mm Increments
Ordering Code GC-Q8-G20
[ ! ] 5 ≤ G ≤ Q × 3 [ ! ] Y dimension is shortened.
[ ! ] No Retaining Ring Groove [ NG ] Combination with FC is not available		Flat Machined on Fixed Side Shaft End




 		SCAdds a flat on the fixed side shaft end.
SC = 1 mm Increments
Ordering Code SC20
[ ! ]5 ≤ SC ≤ P × 3 SC ≤ F－1
Change Support Side Shaft End Length
 
Part NumberA
BSBR15□□9.15
BSBR20□□10.15
BSBR25□□15.35
FCChanges the length of the support side shaft end.
FC = 1 mm Increments
Ordering Code FC20
" ! "13 ≤ FC ≤ 30 (BSBR15□□ / 20□□)
" ! "19 ≤ FC ≤ 60 (BSBR25□□)
[ ! ] Y dimension is shortened.
[NG] Combination with GC is not available		Flat Machined on Fixed Side Shaft End (2 Locations)

JIS−SWC SGC

 		JIS−SWC
SGC		Adds two flats on the fixed side shaft end.
JIS−SWC: 90° Position, SGC: 120° Position
1 mm Increments
Ordering Code JIS−SWC20
[ ! ]5 ≤ JIS−SWC·SGC ≤ P × 3 JIS−SWC·SGC ≤ F－1
Tapped Hole on Support Side Shaft End
 
Part NumberAM ℓ 
BSBR15□□9.15M5 × 0.812
BSBR20□□10.15M6 × 1.015
BSBR25□□15.35M8 × 1.2520
MCAdds a tapped hole on the support side shaft end.
MC = 1 mm Increments
Ordering Code MC40
" ! "18 ≤ MC ≤ 30 (BSBR15□□)
" ! "21 ≤ MC ≤ 30 (BSBR20□□)
" ! "28 ≤ MC ≤ 60 (BSBR25□□)
[ ! ] Y dimension is shortened.		Installing Special Temporary Shaft


 		TASDedicated
Temporary Shafts suitable for Ball Screws are installed.
When removing Nut from Screw Shaft, always use Special Temporary Shaft.

[ ! ] Specify an alteration position to be 2 mm or more away from the stepped part. (Refer to the diagram in Caution (1))
[ ! ] When selecting multiple alterations, the distance between machined areas should be 2 mm or more. (Refer to the diagram in Caution (2))
[ ! ] When flat machining, wrench flats, square chamfering and keyway alterations are combined with each other, their orientations will be random.
(Refer to the diagram in Caution (3))
[ ! ] Do not specify multiple alterations in such a way that they overlap with each other in the rotating direction on the same shaft. (Refer to the diagram in Caution (4))
[ ! ] When two or more features are specified on a shaft, their orientation will be random.

Caution (1)
Specify the alteration portion to be 2 mm or more away from the stepped part.
Caution (2)
2 mm or more is required for the clearance between multiple alterations.
Caution (3)
When the multiple alterations are combined with each other, their orientations are random and thus, are not always aligned in a linear arrangement. (One example of this is shown in the diagram below.)
For Alterations A and B added to the same shaft, as shown in the diagram above, their orientations are random and thus, there are some cases where they are not aligned in a linear arrangement.		Caution (4)
Do not specify multiple alterations in such a way that they overlap with each other on the same shaft. (Any diagram as shown below is not acceptable.)
 
Overlapped portion of Alterations A and B

Part Number:  

    3D preview is not available, because the part number has not yet been determined.

  • In order to open the 3D preview, the part number must be fixed.
Loading...

Plug-in is required for 3D Preview

CAD Download

Data to be displayed
30
45
60
  1. 1
Part Number
BSBR1505-[150-1200/1]
BSBR1505G-[150-1200/1]
BSBR1505L-[150-1200/1]
BSBR1510-[150-1200/1]
BSBR1510G-[150-1200/1]
BSBR1510L-[150-1200/1]
BSBR2005-[200-1200/1]
BSBR2005G-[200-1200/1]
BSBR2005L-[200-1200/1]
BSBR2010-[200-1200/1]
BSBR2010G-[200-1200/1]
BSBR2010L-[200-1200/1]
BSBR2505-[200-1500/1]
BSBR2505G-[200-1500/1]
BSBR2505L-[200-1500/1]
BSBR2510-[250-1500/1]
BSBR2510G-[200-1500/1]
BSBR2510L-[200-1500/1]
BSBRK1505-[150-1200/1]-F[15-30/1]-P[6-10/1]
BSBRK1505G-[150-1200/1]-F[15-30/1]-P[6-10/1]
BSBRK1505L-[150-1200/1]-F[15-30/1]-P[6-10/1]
BSBRK1510-[150-1200/1]-F[15-30/1]-P[6-10/1]
BSBRK1510L-[150-1200/1]-F[15-30/1]-P[6-10/1]
BSBRK2005-[200-1200/1]-F[20-36/1]-P[8-12/1]
BSBRK2005G-[200-1200/1]-F[20-36/1]-P[8-12/1]
BSBRK2005L-[200-1200/1]-F[20-36/1]-P[8-12/1]
BSBRK2010-[200-1200/1]-F[20-36/1]-P[8-12/1]
BSBRK2010L-[200-1200/1]-F[20-36/1]-P[8-12/1]
BSBRK2505-[200-1500/1]-F[27-45/1]-P[10-15/1]
BSBRK2505G-[200-1500/1]-F[27-45/1]-P[10-15/1]
BSBRK2505L-[200-1500/1]-F[27-45/1]-P[10-15/1]
BSBRK2510-[250-1500/1]-F[27-45/1]-P[10-15/1]
BSBRK2510L-[200-1500/1]-F[27-45/1]-P[10-15/1]
Part NumberMinimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSScrew Shaft O.D.
(mm) 		Lead
(mm) 		Axial Play Number of Circuits
(Rows x Windings) 		Shaft Overall Length L
(mm) 		Basic Load Rating Dynamic Rating
(N) 		Basic Load Rating Static Rating
(N) 		Grease Type Shaft End Length F
(mm) 		Shaft Dia. P
(Ø) 		Shaft End Dimension (Fixed, Configurable) Nut Size Shaft Dia. P
(φ)
1 7 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Standard1510StationaryStandard-
1 9 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type G1510Stationary--
1 9 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type L1510Stationary--
1 7 Days 101510[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Standard1510StationaryStandard-
1 9 Days 101510[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type G1510Stationary--
1 9 Days 101510[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type L1510Stationary--
1 7 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Standard2012StationaryStandard-
1 9 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Type G2012Stationary--
1 9 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Type L2012Stationary--
1 7 Days 102010[0.2 or Less] 0.15 or Less1 x 2.5200 ～ 12001060022700Standard2012StationaryStandard-
1 9 Days 102010[0.2 or Less] 0.15 or Less1 x 2.5200 ～ 12001060022700Type G2012Stationary--
1 9 Days 102010[0.2 or Less] 0.15 or Less1 x 2.5200 ～ 12001060022700Type L2012Stationary--
1 7 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660018700Standard2715StationaryStandard-
1 9 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660018700Type G2715Stationary--
1 9 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660018700Type L2715Stationary--
1 7 Days 102510[0.2 or Less] 0.20 or Less2 x 2.5250 ～ 15002750076300Standard2715StationaryStandard-
1 9 Days 102510[0.2 or Less] 0.20 or Less2 x 2.5200 ～ 15002750076300Type G2715Stationary--
1 9 Days 102510[0.2 or Less] 0.20 or Less2 x 2.5200 ～ 15002750076300Type L2715Stationary--
1 7 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Standard15 ～ 30-ConfigurationStandard6 ～ 10
1 9 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type G15 ～ 30-Configuration-6 ～ 10
1 9 Days 10155[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type L15 ～ 30-Configuration-6 ～ 10
1 7 Days 101510[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Standard15 ～ 30-ConfigurationStandard6 ～ 10
1 9 Days 101510[0.10 or Less] 0.10 or Less1 x 2.5150 ～ 1200510010500Type L15 ～ 30-Configuration-6 ～ 10
1 7 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Standard20 ～ 36-ConfigurationStandard8 ～ 12
1 9 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Type G20 ～ 36-Configuration-8 ～ 12
1 9 Days 10205[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1200620014700Type L20 ～ 36-Configuration-8 ～ 12
1 7 Days 102010[0.2 or Less] 0.15 or Less1 x 2.5200 ～ 12001060022700Standard20 ～ 36-ConfigurationStandard8 ～ 12
1 9 Days 102010[0.2 or Less] 0.15 or Less1 x 2.5200 ～ 12001060022700Type L20 ～ 36-Configuration-8 ～ 12
1 7 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660018700Standard27 ～ 45-ConfigurationStandard10 ～ 15
1 9 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660014700Type G27 ～ 45-Configuration-10 ～ 15
1 9 Days 10255[0.10 or Less] 0.10 or Less1 x 2.5200 ～ 1500660014700Type L27 ～ 45-Configuration-10 ～ 15
1 7 Days 102510[0.2 or Less] 0.20 or Less2 x 2.5250 ～ 15002750076300Standard27 ～ 45-ConfigurationStandard10 ～ 15
1 9 Days 102510[0.2 or Less] 0.20 or Less2 x 2.5200 ～ 15002750022700Type L27 ～ 45-Configuration-10 ～ 15

Loading...

  1. 1

Specifications/Overview

■Peripherals: Combination with the following parts is available.
Support Units (Square Type) Support Units (Round Type) 
 
■Combination with Support Units
Ball Screw Part NumberRecommended Support Unit
TypeScrew Shaft
O.D.		LeadPart NumberShapeFixed SideSupport Side
TypeNo.
BSBR1505
10		BRW12Round○ 
BUR12 ○
BSW12Square○ 
BUN12 ○
2005
10		BRW15Round○ 
BUR15 ○
BSW15Square○ 
BUN15 ○
2505
10		BRW20Round○ 
BUR20 ○
BSW20Square○ 
BUN20 ○
[!] Other than the part numbers shown above, a rich variety of Support Units are also available.
[ ! ] For combination of shaft ø20 or ø25 with a square support unit, the ball screw nut may come into contact with the bottom surface. So please be careful when designing.
■ Notes
[ ! ] Filled with lithium soap based grease (Alvania Grease S2 made by Showa Shell Sekiyu K.K).
[!] Alternative grease types available.
" ! " Cautions: Do not let the nuts overrun or remove the nuts from the screw shafts.
It may cause the balls to fall out or damage the ball recirculation parts.
[!] The collar included with this product should be installed in the same position as indicated with the "*Collar" text on the drawing. In addition, the collar included with the Support Unit product should be installed and tightened on the nut side of the ball screw.
[ ! ] Note that, when a ball screw shaft or ball screw nut is tilted, it may be fallen out by its own weight.

General Information - Ball Screws

Ball screw drive - ball screw drive, nut stop - ball screw drive, nut damper - ball screw drive, block shape - ball screw drive, nut mount

 

Ball Screw Selection Details

- Material: steel

- Coatings: uncoated, LTBC coating, phosphate conversion coating

- Heat treatment: up to 62HRC

- Precision category: C3, C5, C7, C10

- Precision classes: precision class, standard class

- Slope: 1 to 32 mm

- Outer diameter: 6 to 32 mm

- Length (mm): 100 to 2000

- Nut shape: round flange, square flange, compact flange, block shape

 

Description/Basics

Ball screws are intended for converting rotary motion to linear motion. This can also be done in reverse order from linear to rotary motion. With the ball screws, this is achieved extremely precisely due to their low play. In mechanical engineering, the ball thread drive is an indispensable feature and is indispensable in precision applications. These work in horizontal and vertical orientation, allowing to shift, raise and lower devices.
The ball screws are often driven by motors and shaft couplings, or manually via rotary/crank handles.
When utilising a keyway, it is recommended using a machine key, as these can be combined excellently due to the manufacturing tolerances.
For a smooth process, it is recommended installing the ball screw with a fixed bearing and a floating bearing. This ensures that the ball screw does not bend due to compression and generate vibrations. For this purpose, MISUMI offers the right support units drives in various designs. For more information on how to install ball screws, see the Installation Instructions available as a PDF.
Ball screw nuts are available in different shapes. These enable versatile utilisation, even in confined spaces. Due to their high precision, the ball screws can also provide a high level of repeatability that is necessary in precise positioning applications. These can be utilised, for example, for measuring devices or in 3D printing. It is recommended to use a pre-stressed ball screw for highly precise applications. Due to the pre-tensioning, the axial play is almost zero unlike a conventional ball screw. In addition, MISUMI offers single axis actuators (locating units) for such applications, which as drives are already equipped with precise ball screws.
In smaller applications, a slide screw or a so-called miniature screw drive can be used. Due to their design, these are very compact, but suitable for lower axial loads.
If very high forces occur, a lead screw could also be considered.
Which ball screw is the right one for your application must be calculated based on the existing factors and influences. You can use the selection Ball Screws that is available as a PDF for this purpose. You can also find the service life calculation in this link.

Overview of Screw Drives as PDF

 

Application Examples - Ball Screws

Positioning stage with ball screw drive - positioning stage with ball screw drive and profile rail guide

Application example for positioning stages
(1) Linear guide accessories, (2) Standard linear guide, (3) Table plate (meviy), (4) Ball screw, (5) Support units

Ball screw drive with bearing housing and damper - nut stop for ball screw drives - fixed bearings and floating bearings for ball screw drives

Application example for the ball screw
(1)) Support units, (2) Ball screw nut stops, (3) Ball screw, (4) Ball screw nut mountings


Lifting table and lifting device with ball screw drive - lifting table with rotary handle - lifting table with crank

Application example for a lifting device
(1) Ball screw, (2) Standard linear guide, (3) Support units, (4) Table top (meviy)

 

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry
 

Basic information

Type Rolled Accuracy Grade C10 Preload Not Preloaded
Conditions of Use Standard Twisting Direction Right Nut structure 1-fach
Circuit System Tube Type Screw Shaft Surface Treatment Phosphate Coating

Configure

Clear all

33Suggestion of an applicable part number.

View Part Numbers

Some specification is not specified yet.
The part number is completed.

Basic Attributes

  • Screw Shaft O.D.(mm)

    • 15
    • 20
    • 25

    Clear

  • Lead(mm)

    • 5
    • 10

    Clear

  • Axial Play

    • 0.2 or Less
      • 0.15 or Less
      • 0.20 or Less
    • 0.10 or Less
      • 0.10 or Less

    Clear

  • Number of Circuits(Rows x Windings)

    • 1 x 2.5
    • 2 x 2.5

    Clear

  • Shaft Overall Length L(mm)

     [150-1500/1mm Unit(s)]

    Clear

  • Grease Type

    • Standard
    • Type G
    • Type L

    Clear

  • Shaft End Length F(mm)

    • 15
    • 20
    • 27

     [15-45/1mm Unit(s)]

    Clear

  • Shaft Dia. P(Ø)

    • 10
    • 12
    • 15

    Clear

  • Shaft End Dimension (Fixed, Configurable)

    • Configuration
    • Stationary

    Clear

  • Nut Size

    • Standard

    Clear

  • Shaft Dia. P(φ)

     [6-15/1φ Unit(s)]

    Clear

  • Type

    • BSBR1505
    • BSBR1505G
    • BSBR1510
    • BSBR1510G
    • BSBR1510L
    • BSBR2005
    • BSBR2010
    • BSBR2010G
    • BSBR2010L
    • BSBR2505
    • BSBR2510
    • BSBR2510G
    • BSBR2510L
    • BSBRK1505
    • BSBRK1510
    • BSBRK1510L
    • BSBRK2005
    • BSBRK2010
    • BSBRK2010L
    • BSBRK2505
    • BSBRK2510
    • BSBRK2510L

    Clear

  • Filter by CAD data type

    • 2D
    • 3D

    Clear

Filter by standard shipping days

    • All
    • 7 Days or Less
    • 9 Days or Less

    Reset

Optional Attributes

Frequently Asked Questions (FAQ)

Question:

How do you mount a ball screw drive?
Answer:

A ball screw should be stored with a fixed bearing and a floating bearing. The fixed bearing should ideally be installed on the engine side or the drive side. Fixed bearing housings come already equipped with angular contact ball bearings to absorb axial forces. This combination makes ball screws an ideal candidate for positioning. However, a preloaded threaded drive should be selected for very high precision as it has very little axial play.

Question:

Why should a fixed and floating bearing be used?
Answer:

A fixed bearing housing is often used on the drive side. The floating bearing with housing, on the other hand, allows a small axial deviation and thus compensates for a change in length or a length tolerance. This prevents compression and bending of the ball screw and an imbalance through the length compensation. This may already occur by heating the spindle or application. Fixed and floating bearings are recommended in many rotary applications.
Question:

How does a ball screw work?
Answer:

A ball screw works similarly to a profile rail guide . In the nut of the ball screw, balls are in a closed ball circulation, which are guided to the spindle by the circular alignment. Thus, an unlimited stroke is theoretically possible, which, however, is limited by the length of the spindle. It is important to ensure that the nut of the ball screw is not removed from the spindle, because the balls can fall out as a result.
Question:

Why does the spindle oscillate in a ball screw drive?
Answer:

One possible cause for this could be that the ball screw is exposed to excessively high rotational speeds. The permissible rotational speed should not be higher than 80% of the critical speed. Here, attention should be paid not only to the visibly rotating components, but also to the rotational speed of the balls. Further information can be found in the ball screw driver selection as a PDF. Another possibility for the spindle to oscillate could be a compression of the spindle. Therefore, it is important to install a ball screw with a fixed bearing and a floating bearing so that these stresses can be compensated through a floating bearing. MISUMI offers this as ready-to-install bearing housings.
Question:

Is the ball screw nut removable?
Answer:

The ball screw nut or ball wrap nut should not be removed from the lead screw. There is a risk that the balls will fall out of the nut. This also means that the nut should not be extended over the threaded surface of the spindle. To remove the nut, you can work carefully with a transition shaft with the appropriate core diameter. However, MISUMI also offers an option [TAS] that provides a transition shaft with the ball screw drive. If a ball screw with reverse ball screw is required, the option [RLC] can be supplied with the ball screw nut installed in reverse.
Question:

Can you replace just the ball screw nut?
Answer:

A ball screw drive should always be replaced as one unit. If damage or wear has already occurred on the spindle, the accuracy of the ball screw drive can no longer be guaranteed. Therefore, it is always recommended replacing spindle and nut together. In addition, the ball screw nut should generally not be removed from the spindle. As a result, the balls that are necessary for the transmission of force may fall out.
Question:

How long does a ball screw lasts?

Answer:

How long a ball screw can withstand an application depends on many factors. Therefore, it is not possible to say generally how long a ball screw will last. When a ball screw should be replaced, it must be determined mathematically. In the following link, you will find the appropriate calculation formula for the lifetime available as a PDF.
Question:

How large is the axial play of a ball screw?
Answer:

The axial play varies depending on the precision class and size of the ball screw. You can find the appropriate axial play for different ball screws under the selection Ball Screws available as a PDF .
Question:

What must be considered when installing a ball screw?
Answer:

When installing a ball screw spindle, more must be taken into account than just ensuring that it is installed tension-free. There are a few things you should observe even before installation. You can view these as a PDF under Precautions.
Question:

Are the ball screws lubricated?
Answer:

The ball screws from MISUMI are pre-greased. Various lubricants are available for this purpose. Lithium-saponified lubricants are used as standard lubricants. In addition, MISUMI offers heat-resistant lubricants or lubricants suitable for cleanrooms. You can find further information under Installation and Maintenance available as a PDF.

Show more FAQ Close

Complementary Products

Tech Support

Technical Support
Tel：+49 69 668173-0 / FAX：+49 69 668173-360
Technical Inquiry

Payment Method

  • Payment on account
  • Pre Payment
  • PayPal

On-Demand Manufacturing

Change View

Certificates

  • ISO-9001
  • ISO-14001
  • AEO Certification
  • RoHS
  • REACH

MISUMI worldwide

Social Media

Legal notice

Copyright © MISUMI Corporation All Rights Reserved.