Page 308 - MiSUMi 2025

Economy series Alteration Options / Peripheral Products Lead Accuracy Grade Economy series
Ball Screws Ball Screws

QAlthough the machining is carried QAlteration Options QBall Screw Lead Precision
out according to the standard shaft Allowable value of representative travel
end by default, there are a variety of · Alteration options for the · Alteration options for Actual Travel (la) Effective Thread Length (lu) Nominal Travel (lo) error (±ep) and variation (Vu) Unit: μm
support side shaft end
the fixed side shaft end
alterations that can be specified. + Line Line Screw Effective Accuracy grade
No Machining on Support Wrench Flats on Fixed Side Representative Travel (lm) Standard Travel (ls) Length (mm) C3 C5 (Economy series)
· Both the support side and the fixed side are Side Shaft End 0’ Line Line Representative Representative
shipped after machining according to the 0 More than or Less Travel Distance Variation Travel Distance Variation
Error
Error
assembly dimensions with the applicable t 315 12 8 23 18
support unit. code: NC code: SZC Travel Distance Error - v 300 315 400 13 10 25 20
500
20
27
400
10
15
3 Ball Nut Orientation Reversed Keyway Machined on Fixed v2π ep 500 630 16 12 30 23 3
Side Shaft End
(Support side) (Fixed side)
35
800
630
18
13
25
800
Standard 2π 300mm vu 1000 1000 21 15 40 27
Ball Screws / Lead Screws Change code: RLC code: KC 1250 1600 29 18 54 35 Lead Screws Ball Screws /
30
1250
46
24
16
No Retaining Ring Groove
300mm and pitch periodic error (V2π)
on Support Side Shaft End Keyway Machined on Standard value of variation (V300) relative to displacement Unit: μm
Fixed Side Shaft End
Accuracy grade V300 C3 V2π C5 (Economy series) C7 (Economy series) C10
Standard
Rolled Ball Screws Change EC7(Economy series) representative distance error (ep) can be calculated Screws Rolled Ball
Item
V2π
V300
V300
V300
52
18
Standard value
6
210
8
8
code: KLC
code: RNC
P.03-009 · Detailed dimension of alteration KC·KLC keyway Change Support Side Shaft Flat Machined on Fixed Side based on ep=2·lu/300·V300. P.03-009
Precision Ball Screws 6.3 b t Shaft Nominal Tolerance Nominal Tolerance Screws Precision Ball
Shaft End
End Machining
b
t
Dia.
(N9)
P.03-027 8~10 Dimensions -0.004 Dimensions code: GC code: SC P.03-027
6~7
2
1.2
-0.029
Ball Screw Supports / Motor Brackets 11~12 4 5 6 -0.03 2.5 +0.1 Change Support Side Shaft Motor Brackets Ball Screw Supports /
3
1.8
0
End Length
0
3.0
13~17
3.5
18~20
P.03-047 code: FC QBall Screws runing noise level Ball screw noise level is affected by several important factors: P.03-047
Factor
High level
Low level
noise level
Ball Screws noise level is affected by several important factors:
Lead Screws * For details of the machining content, please visit MISUMI official website. - The figures below are ball screws noise levels by specification. 1 Precision grade High precision Low precision Lead Screws
Big
Small
2 Diameter
- Results are for reference and may not cover all spectification.
3 Lead
Long
Short
- MISUMI C7 grade ensures under 70 dB at 1500 RPM.
Slow
Fast
4 Rotary speed
P.03-058 · Economy series Support Units and Economy series Motor Brackets can also be purchased. (noise measured 1 meter from the ball screws) 5 Assemble accuracy Good Poor P.03-058
Economy series Motor Brackets (P.03-056)
Economy series Support Units
Lead Screw Nuts Support side Fixed side Square-Narrow Pitch Type (P.03-052) servo motor stepper motor 80 Ball Screw noise and precision grade relationship 80 Ball Screw noise and diameter relationship 80 Ball Screw noise and lead relationship Nuts Lead Screw
Square-Standard Type (P.03-051)

Applicable
Applicable
Support side
Fixed side
P.03-077 dB 70 dB 70 dB 70 P.03-077
Lead Screw Supports Round Type (P.03-053) Low Profile Type (P.03-054) 50 900 1200 1500 1800 2100 2400 2700 60 900 1200 1500 1800 2100 2400 2700 50 900 1200 1500 1800 2100 2400 2700 Supports Lead Screw
60
60
50
C7 Ball Screw
Lead 20
RPM
dia 20
P.03-079 Support side Fixed side Support side Fixed side 1. Noise level in different ball screw precision grade 2. Noise level in different ball screw diameter RPM 3. Noise level in different ball screw lead RPM P.03-079
C5 Ball Screw
Lead 5
dia 15
Lead Screw Stop Plates / Position Indicators - Test pieces : C5 and C7 Ball screw, Dia 20mm, lead 20mm - Test pieces: C7 ball screw, lead 20, diameter 15 and 20 - Test pieces: C7 grade, diameter 15mm, lead 5 and 20 Position Indicators Lead Screw Stop Plates /
- The shorter lead the lower noise.
- The smaller diameter, the lower noise
- The higher the precision, the lower noise.
- MISUMI ball screws are available from dia 4mm to 50mm
- MISUMI ball screws are available in multible lead
- MISUMI ball screws are available in both C5 and C7 grades.
P.03-081 P.03-081
03-011 03-012