Products Product detail

SI Series ISO6431 Standard Pneumatic Cylinder

SI ISO6431 standard pneumatic cylinder family for broad-bore industrial automation, including SI, SID and SIJ catalog variants.

Kailing SI series ISO6431 standard pneumatic cylinder
PUBLISHED PRODUCT

Use this page for SI ISO6431 standard cylinders and the related SID/SIJ variants. Confirm bore, stroke, adjustment stroke if needed, magnet, mounting, port size and quantity before quotation.

Ordering Code Product configuration
SI - 50 X 50 - 25 - S - LB
Series
  • SI: ISO6431 standard double acting cylinder
  • SID: ISO6431 double-shaft double acting type
  • SIJ: ISO6431 double-shaft stroke-adjustable type
Bore
  • SI32
  • SI40
  • SI50
  • SI63
  • SI80
  • SI100
  • SI125
  • SI160
  • SI200
Stroke
  • Specify exact stroke in mm
Cushion / adjustment Cushion or adjustment
  • Confirm cushion, PPV or adjustment-stroke requirement by series
Magnet / switch Magnet or switch
  • Confirm magnet and magnetic switch requirement
Mounting
  • Basic
  • LB
  • FA
  • FB
  • CA
  • CB
  • TC
  • TC-M
  • SDB

Confirm ISO family and installation style

SI and DNC are both ISO-standard cylinder families, but they use different body styles and order-code options. Confirm the exact series before selecting bore, stroke and mounting.

RFQ confirmation points

Send series, bore, stroke, cushion or adjustment requirement, magnet/sensor need, mounting style, port size, working pressure and quantity.

Technical Specifications Published data
ParameterValue
StandardISO6431 standard cylinder family
Working mediumAir
Bore range32, 40, 50, 63, 80, 100, 125, 160 and 200mm
Pressure range0.1-0.9MPa
Proof pressure1.35MPa
Temperature range-5C to +70C
Speed range50-800mm/s
CushioningAdjustable cushion
Port referenceG1/8, G1/4, G3/8 and G1/2 by bore
Technical Specifications Published tables

SI order-code map

SegmentMeaning
SI / SID / SIJStandard, double-shaft double acting, and double-shaft stroke-adjustable variants
Bore32-200mm catalog references
StrokeSpecify stroke in mm
Adjustment stroke25, 50 and 75mm adjustment references for SIJ-style order code
S / blankS means with magnet; blank means without magnet
MountingBasic, LB, FA, FB, CA, CB, TC and TC-M references

SI specification reference

ParameterCatalog value
Working mediumAir
Bore range32-200mm
Pressure range0.1-0.9MPa
Proof pressure1.35MPa
Temperature range-5C to +70C
Speed range50-800mm/s
CushioningAdjustable cushion
Port referenceG1/8 to G1/2 by bore

SI force-reference bore set

BorePiston rod outside diameterAction type
3212Double acting
4016Double acting
5020Double acting
6320Double acting
8025Double acting
10025Double acting
12532Double acting
16040Double acting
20040Double acting

Frequently Asked Questions

  • FAQ Can SI and DNC be substituted directly?
    Do not assume direct substitution. Confirm mounting dimensions, body style, stroke, cushion and sensor requirements before replacement.
  • FAQ What information is required for a replacement cylinder?
    Provide the old model code, bore, stroke, mounting, port thread, cushion, magnet or switch requirement, and photos of the nameplate.

Need a quotation?

Send the model, medium, pressure, port size, body material and quantity for review.

Send RFQ →