Geometry
Performance
Strength Check
Buckling Check
Weight Breakdown
Outline Drawing
ASME Y14.5 dimensioning · Y14.2 line types · Y14.1 B-size 17×11 in (1 SVG unit = 1 drawing inch) · 3rd-angle projection front + right view · 3-decimal inch · mark position draggable
Technical Specification
Packing PlanGB/T 13384 / GB/T 191
Unit Converterpsi · bar · MPa · kg · t · lb · mm · inch
Pressure
Weight
Length
Quick reference: 3000 psi = 206.84 bar = 20.68 MPa · 2000 psi = 13.79 MPa · 1 in = 25.4 mm · 1 lb = 0.4536 kg
Hydraulic Cylinder Design Standards ReferenceNFPA / ANSI / SAE / ASME / ISO
1. Standards Framework
| Standard | Scope | GB / Related |
|---|---|---|
| NFPA T3.6.7（ANSI B93.15） | North American cylinder mounting interchange (tie-rod, 2000/3000 psi class, ~19 mounting codes) | Used with ISO 6020 series |
| ISO 3320 | Bore / rod / area ratio series (Ø50~320 mm) | GB/T 2348 |
| ISO 3322 | Nominal pressure classes | — |
| ISO 4393 | Stroke (piston travel) series | GB/T 2349 |
| ISO 4395 | Piston rod end threads (metric M and inch UNF/UNS) | GB/T 2350 |
| ISO 6020-1 / 6020-2 | Medium duty 160 bar mounting dimensions (standard / compact) | — |
| ISO 6022 | Heavy duty 250 bar (mill / heavy) mounting dimensions | — |
| ASME B1.1 | Unified inch threads UNC/UNF/UN/UNS/UNEF (class 2A external / 2B internal) | GB/T 192~197(metric threads) |
| SAE J514 | Hydraulic tube fittings (JIC 37° flare, UNF) | — |
| SAE J1926 | Straight-thread O-ring port ORB (#4~#32) | GB/T 2878 ↔ ISO 6149(metric) |
| ISO 228-1 | G series 55° parallel pipe thread (BSPP) | GB/T 7307 |
| ASME B1.20.1 | NPT series 60° taper pipe thread (1:16) | GB/T 12716 |
2. Pressure Classes & Proof Test
| Item | US Practice | This tool (ISO/GB) |
|---|---|---|
| Common rated pressure | 2000 psi (13.79 MPa) / 3000 psi (20.68 MPa); heavy non-shock 5000 psi (34.47 MPa) | Mobile machinery typically 16~25 MPa |
| Proof test pressure | 1.5 × rated (SAE/NFPA practice) | GB/T 3766-2015: 1.5×Pn for ≤16 MPa, 1.25×Pn for >16 MPa |
| Burst pressure | Industry practice ≥ 2.5~4 × rated | ≥ 2.5 × Pn (Faupel formula) |
3. Mounting Code Cross-Reference (NFPA / ISO 6020)
| Code | Mounting | This tool option |
|---|---|---|
| MF1 / MF5 | Head rectangular/square flange (attached flange) | flangeF front flange |
| ME5 | Integral head flange | |
| MF2 / MF6 | Rear rectangular/square flange | flangeR rear flange |
| ME6 | Integral cap flange | |
| MX1 / MX2 / MX3 | Tie-rod extension (both / cap / head ends) — tie-rod cylinders only | — (not for welded cylinders) |
| MS2 / MS3 / MS7 | Side / center / end lug | foot mount (ISO MF3) |
| MP1 / MP2 | Fixed / removable clevis | clevis / pineye |
| MT1 / MT2 / MT4 | Front / rear / intermediate trunnion | trunnion (MT4) |
4. Materials Cross-Reference
| Component | US Practice | This tool material |
|---|---|---|
| Barrel | ASTM A513 DOM cold-drawn seamless / ST52 high-strength tube (3000 psi class) | 27SiMn (GB/T 3077, Q&T) / 45 / Q355 |
| Piston rod | AISI 1045 (Ck45) hard-chrome ≥20 μm, small-section yield ≥100 ksi class | 45 (GB/T 699) chromed / 42CrMo (heavy duty) |
| Cap / piston | Ductile iron / cast steel / steel plate weldment | QT500-7 (GB/T 1348) / Q355 |
| Ports | SAE J1926 straight-thread O-ring port (UNF), or NPT taper thread | SAE series (auto-matched) / G series BSP |
Note: this tool calculates per Chinese national standards (GB) and ISO. For US inputs (psi, inch), convert to MPa / mm first using the converter above. Rod threads may be entered directly in US form (e.g. 1/2-20 UNF, 1-14 UNS); the drawing will auto-convert the major diameter.
Thread SpecificationsASME B1.1 Unified Inch · ISO 4395 Metric
UNC Coarse
UNF Fine
UN / UNS (hydraulic rod/port sizes)
Metric M series (ISO 4395)
G pipe thread 55° (ISO 228-1 / BSPP)
NPT taper pipe thread 60° (ASME B1.20.1)
US thread designation: major dia (inch fraction) − TPI + series (UNC/UNF/UN/UNS) + class (2A external / 2B internal), e.g. 1/2-20 UNF-2A. Pitch mm = 25.4 ÷ TPI.
The G value is the pipe nominal size (not major diameter), e.g. G 1/2 has 20.955 mm major dia; sealing is by face O-ring or gasket (BSPP), with PTFE tape for taper internal threads. NPT is a 1:16 taper thread sealing by thread deformation; use sealant with NPSC/straight ports. G and NPT have different flank angles (55° vs 60°) and are not interchangeable. G/NPT are used for ports and piping, not piston-rod ends.
The G value is the pipe nominal size (not major diameter), e.g. G 1/2 has 20.955 mm major dia; sealing is by face O-ring or gasket (BSPP), with PTFE tape for taper internal threads. NPT is a 1:16 taper thread sealing by thread deformation; use sealant with NPSC/straight ports. G and NPT have different flank angles (55° vs 60°) and are not interchangeable. G/NPT are used for ports and piping, not piston-rod ends.
SAE J1926 Straight-Thread O-Ring Ports#4 ~ #32 · with G / NPT equivalents