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Ball Screws - Screw diameter 12mm or 15mm, compact nut.

Rolled Ball Screw Shaft Diameter 12 Lead 4:Related Image
Rolled Ball Screw Shaft Diameter 12 Lead 4:Related Image
Rolled Ball Screw Shaft Diameter 12 Lead 4:Related Image
・Materials
Nut TypeTypeAccuracy GradeShaft Dia.LeadScrew ShaftNut
StandardF, P Configurable[ M ]Material[ H ]Hardness[ S ]Surface Treatment[ M ]Material[ H ]Hardness[ S ]Surface Treatment
Compact
Nut
BSSCBSSCKC101241055 Carbon SteelInduction Hardened
56~62HRC
-JIS SCM420HCarburized
58~62HRC
-
155, 10
* Included Collar
[ M ] Material: 1045 Carbon Steel
[ S ] Surface Treatment: Black Oxide
* Included Collar
[ M ] Material: 1045 Carbon Steel
[ S ] Surface Treatment: Black Oxide
 

Specifications

Part Number-L-F-P
BSSC1204-300    
BSSCK1505-300-F15-P6
Nut TypeAccuracy GradePart Number1mm IncrementYABBall Dia.Ball Center Dia.Screw Root Dia.Number of CircuitsBasic Load RatingAxial PlayTwisting Direction
TypeScrew Shaft O.D.LeadL*F*PC (Dynamic) kNCo (Static) kN
Compact
Nut
C10BSSC1204150~800158L-65--212.25(10.4)4 turns,
1 row
2.795.270.05 or LessRight
BSSCK15~245~8L-(50+F)
BSSC1505150~12001510L-6733223.17515.5(12.25)3 turns,
1 row
4.147.060.10 or Less
BSSCK15~306~10L-(52+F)
BSSC10200~12001510L-6748374.257.45
BSSCK15~306~10L-(52+F)
* F and P are configurable for BSSCK only. [ ! ]F≤Px3 kgf=Nx0.101972

Price list

Nut TypeAccuracy GradePart NumberUnit Price 1~4 pc(s).
L150~200L201~400L401~600L601~800L801~900L901~1200
Compact
Nut
C10BSSC120411,63011,63012,73014,800--
BSSC150512,98013,40013,83014,94015,66016,830
BSSC151012,98012,98013,22014,57015,30015,850

Alterations

Rolled Ball Screw Shaft Diameter 12 Lead 4:Related Image
[ ! ] For installation method, see >> Click here

Part Number 

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Part Number
BSSC1204-[150-800/1]
Part NumberMinimum order quantityVolume DiscountDays to Ship Screw Total Length L
(mm)
1 Piece(s)

11 Days or more

150 ~ 800

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  1. 1

More Information

Rolled Ball Screw Shaft Diameter 12 Lead 4:Related Image
■Combination with Support Units
Ball Screw Part NumberRecommended Support Unit
TypeScrew Shaft O.D.LeadPart NumberShapeFixed SideSupport SidePage
TypeNo.
BSSC1204BSV10SSquare
Low Profile
 >> Click here
BUV10 >> Click here
BRW10SRound >> Click here
BUR10 >> Click here
1505
10
BSV12Square
Low Profile
 >> Click here
BUV12 >> Click here
BRW12Round >> Click here
BUR12 >> Click here
[ ! ]Other than the part numbers shown above, a variety of Support Units are also available. (>> Click here~ >> Click here)
■Combination with Nut Brackets
Ball Screw Part NumberRecommended Nut Bracket
TypeScrew Shaft O.D.LeadPart NumberPage
TypeNo.
BSSC1204BNFB
BNFM
BNFR
BNFA
1204C>> Click here
15051505C>> Click here
101510C>> Click here
[ ! ]Other than the part numbers shown above, a variety of Nut Brackets are also available. (>> Click here)
■Notes
[ ! ]Filled with lithium soap based grease (Alvania Grease S2 made by Showa Shell Sekiyu K.K).
[ ! ]For accuracy of Ball Screws, see >> Click here, >> Click here
[ ! ]For details of Support Units, see >> Click here~ >> Click here
[ ! ]Cautions: Do not let the nuts overrun its stroke or remove the nuts from the screw shafts.
It may cause the balls to fall out or damage the ball recirculation parts.
[ ! ]Included Collar is packaged together with main body of Ball Screws. Store this Included Collar with care since it is required when mating with Support Units.
[ ! ]Do not tilt the ball screw assembly since the nut may rotate off from the shaft due to its own weight.

Technical Information

Applications for different types of grease

Grease Performance

TypeProduct NameMain Characteristic
Type LET-100K (Made by Kyodo Yushi)Excels in heat resistance, oxidation stability, and adhesion. In addition, splash or leakage is reduced.
Type GLG2 (Made by NSK Ltd.)Special grease for linear guides, ball screws and etc. for clean-room use.

Keyway Dimension Details

Located at P on Fixed Side Shaft End

Shaft Diameterbt
Ref.
Dim.
Tol.
(N9)
Ref.
Dim.
Tol.
6-72 -0.004
-0.029
1.2 +0.1
0
8-1031.8
11-1240
-0.03
2.5
13-1753.0
18-2063.5

Peripheral Components

Combination of the following parts are available.

Support Units
(Square, Low Profile)
Support Units
(Round)
Nut Brackets
(Block Type)
Assembly Example

Combination with Support Units and Nut Bracket

Combination with Support Units

Ball Screw Part NumberRecommended Support Unit
TypeScrew Shaft Outer DiameterLeadPart NumberShapeFixed SideSupport SideLink
TypeNo.
BSSC1204BSV10SSquare-Detail here
BUV10Low Profile-Detail here
BRW10SRound-Detail here
BUR10-Detail here
1505
10
BSV12Square-Detail here
BUV12Low Profile-Detail here
BRW12Round-Detail here
BUR12-Detail here

*Aside from the part numbers shown above, there are a variety of other Support Units available.

Combination with Nut Bracket

Ball Screw Part NumberRecommended Nut Brackets
TypeScrew Shaft Outer DiameterLeadPart NumberLink
TypeNo.
BSSC1204BNFB1204CDetail here
BNFM
1505BNFR1505CDetail here
10BNFA1510CDetail here

Support Information

Mounting Method Type

Installation MethodsSpeedAccuracySuggested Support Unit
Intermediate – High Speed
Applications
* Most commonly selected installation method
Intermediate Speed ApplicationsLow Speed Applications
* For short shaft length
Medium – HighHighMedium
Standard Type BRW and BUR were selected.Standard Type BRW was selected.BRWE Type was selected.

For more details, click here.

Precision Ball Screws

Standard values for variations within 300mm of effective thread length (V300) and in one revolution (V2π) for Positioning Screws (JIS B 1192-1997, C accuracy grade series).

Precision GradeC3C5
ItemV300V2πV300V2π
Standard value86188

Unit:μm

Standard values for variations within 300 mm of effective thread length (V300) for Transfer Screws (JIS B 1192-1997, Ct accuracy grade series).

Precision GradeCt7Ct10
V30050210

Unit:μm

[!]Actual Mean Travel Error (ep) for Transfer Screws (JIS B 1192-1997, Ct accuracy grade series) is obtained:

TermSymbolMeaning
Actual Mean
Travel Error
epDifference between Actual Mean Travel and Specified Travel.
VariationV300Variation for a 300 mm span arbitrarily taken from the effective thread length.
V2πVariation for an arbitrary 1 revolution (2πrad).
LengthLuScrew Effective Length.

For more details, click here.

Cautions

(1) Removing the ball nut from the screw shaft causes the ball to fall out rendering the ball screw unusable. Do not disassemble Ball Screws.
It may attract dusts and degrade assembly accuracy.
Use dedicated temporary shafts when removing Ball Nuts.

(2)Do not let a ball screw nut overrun. It may cause the balls to fall out or damage the ball recirculation parts.

(3) Do not tilt the ball screw assembly since a ball screw nut may spin off from a screw shaft due to its own weight.
Especially when using a ball screw vertically, place a fall-off prevention mechanism since a ball screw nut may spin off due to its own weight

(1) Do not remove the Nut

(2) Do not let a nut overrun

(3) Caution for free fall

 

Basic Information

Cost Efficient Standard Type Rolled Flange Shape Compact Flange
Accuracy Grade C10 Screw Shaft O.D.(φ) 12 Lead(mm) 4
Preload No Preload Nut Type Standard Nuts Operating Condition Standard
Twisting Direction Right Axial Play 0.05 or Less Nut Structure Single
Recirculating Method End Deflector Type Number of Circuits(Rows X Turns) 1×4 Basic Load Rating, Dynamic Rating(N) 2790
Basic Load Rating, Static Rating(N) 5270 Grease Type Standard Shaft End Length F(mm) 15
Shaft Dia. P(φ) 8 Shaft End Dimension (Fixed, Configurable) Fixed Nut Size Compact

Frequently asked questions (FAQ)

質問: What is the allowable temperature range of your ballscrews?
回答: The standard allowable temperature range is 0°C to 80°C.
質問: Can I buy the nut or shaft separately?
回答: No, we do not offer the nut or shaft separately. The ball bearings inside the nut are sized to match each shaft to ensure proper clearance ranges.
質問: What grease is used for your Ball Screws?
回答: The standard grease is Alvania Grease S2 made by Showa Shell Sekiyu K.K. It is an EP 2 lithium bearing grease.
質問: What is the recommended lubrication schedule?
回答: As a rule of thumb, 100 km of linear travel is a good starting point for determining a lubrication schedule. The final schedule should be determined by the customer based on their specific appliation details (load, speed, temperature, contamination ,etc) and application experience.
質問: Do you offer food grade grease?
回答: No, we do not offer food grade grease as a standard option for ball screws.
質問: What does the dynamic load rating mean?
回答: The basic dynamic load rating (Ca) is used to calculate the service life of a ball screw in motion with its ball screw nut under an axial load. The basic dynamic load rating Ca means an axial load at which 90% of a group of identical ball screw units independently operating under the same conditions achieve a rated load of 10^6 revs (1 million revolutions) without causing flaking.
質問: Do you offer screws with right and left hand threads?
回答: We do not offer right and left hand threads on the same shaft as standard. For large volumes, it may be a custom option. Please contact engineering with application details.
質問: What is the difference between pitch and lead?
回答: The pitch is the distance between successive crests of the thread of a screw. The lead is the axial distance traveled by a screw in one turn.
質問: How does temperature increase affect the Ball Screw?
回答: An increase in the screw shaft temperature of 1°C expands the shaft by 12μm per meter. For this reason, although the lead of the Ball Screw is machined to a very high degree of precision, the thermal deformation caused by a temperature increase may reduce positioning accuracy.

Check other FAQ (6 items) Close

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Tech Support

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