SOLH SAI tie-rod-free profile cylinder complies with ISO15552 standard, dimensionally interchangeable with FESTO DNC and SE series. Adopting M-shaped integrated aluminum barrel, it is fitted with double-end adjustable air cushion & PPV elastic pad and dual-side sensor grooves. Full variants include single rod, double rod, stroke adjustable, lockable and SAIF valve-integrated cylinder. It supports oil-free operation with low starting pressure. Bore sizes φ32~200mm, customized stroke up to 2000mm, and various ISO mounting options. Widely used in packaging machinery, conveyors and machine tool automation. Stable mass production and sufficient stock make it a cost-effective general linear actuator for export automation equipment.
SAI Series ISO15552 Tie-Rod-Free Profile Standard Cylinder
Brand: SOLH by Richge Technology
Product Overview
SOLH SAI series double acting profile cylinder complies with ISO 15552 (original ISO6431) / VDMA 24562 international standard. Same mounting dimensions as SI, SE and FESTO DNC series for direct interchange. Featuring high cost performance, stable performance and long service life, it is the most widely used medium-grade ISO standard cylinder for automation equipment.
2. Structure: M-shaped integrated square aluminum profile barrel without exposed tie rods, high rigidity and anti-corrosion. Two-sided sensor grooves for CMSE / DMSE / CS1 magnetic switches.
3. Operation Variants
-- SAI: Single rod double acting standard model
-- SAID: Double rod double acting, excellent anti-torsion capacity
-- SAIJ: Double rod with adjustable stroke
-- SAIL: Lockable cylinder, load holding when air supply lost
-- SAIF: Solenoid valve integrated cylinder
-- Suffix -S: Built-in magnetic ring for position sensor (without -S = non-magnet)
4. Cushion System: Standard double-end adjustable air cushion + PPV elastic buffer pad, effectively reduce impact and noise under high speed & heavy load.
5. Sealing: Double Y-type one-way compensation seal with oil storage groove, low startup pressure (0.1MPa), oil-free operation. Hard chrome plated 45# steel piston rod, wear-resistant & rust-proof.
Complete Model Coding Rule
1. Model Example:SAI50×150-S-FA
Segment
Code
Definition
SAI
Series Code
ISO15552 tie-rod-free profile cylinder
50
Bore Size (mm)
32,40,50,63,80,100,125,160,200
150
Stroke Length
Standard:25~1000mm, max customized 2000mm
-S
Magnet Option
Built-in magnetic ring; remove suffix for non-magnet version
FA
Mounting Code
FA=Front flange
FB=Rear flange
LB=Foot mount
CA=Single clevis
CB=Double clevis
TC=Trunnion
TCM=Trunnion with magnet
2. Standard Order Examples
-- SAI63×200-S: Bore63, stroke200, built-in magnet, basic type
-- SAID40×100-FB: Bore40, stroke100, double rod, rear flange mount
-- SAIL: Lockable cylinder for intermediate position holding
-- SAIF: Integrated solenoid valve cylinder
3-Step Fast Selection Guide
1.Bore selection: Calculate required thrust according to load, reserve ≥50% safety margin; upgrade 1~2 sizes under offset load /cantilever load.
2.Stroke confirmation: Add 20~50mm safety margin to effective travel; max standard stroke 1000mm, customized up to 2000mm.
3.Configuration matching
-- Position feedback: Select -S magnet model, match CMSE/DMSE magnetic switches;
-- Mounting: LB foot mount for horizontal heavy load; FA flange preferred for vertical installation;
-- Special function: Choose SAID for double rod, SAIJ for adjustable stroke, SAIL for position locking, SAIF for compact layout.
One Sentence Summary
SOLH SAI ISO15552 tie-rod-free profile cylinder can directly replace FESTO DNC, SE and SI series, equipped with adjustable PPV buffer and rich variants, cost-effective general linear actuator for export automation, packaging and machine tool equipment.
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