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Cold Drawn Guide Rail
Description
Mechanical Properties & Chemical Composition
Physical Parameter
Rust Prevention
Dimensions and Tolerances of Jiefeng Cold Drawn Guide Rails-ISO7465/GB-T22562/2020 (For Elevator Speed ≤1m/s)
| JF CODE | ISO7465 Designation | b1 | h1 | k | p | rs | l2g | l3g | d | b3 |
| JFC-50 | T50/A | 50 | 50 | 5 | 5 | 1 | 75 | 25 | 9 | 30 |
| Tolerances | ±1 | ±0.2 | ±0.15 | ±0.5 | — | ±0.2 | ±0.2 | —— | ±0.2 | |
| Code according ISO 7465 |
Dimensions [ mm ] |
c [ mm ] |
Type | S [ cm^2 ] |
q1 [ Kg/m ] |
e [ cm ] |
Ixx [ cm^4 ] |
Wxx [ cm^3 ] |
ixx [ cm ] |
Iyy [ cm^4 ] |
Wyy [ cm^3 ] |
iyy [ cm ] |
| T50/A | 50 x 50 x 5 | C=k=5 | A | 4.75 | 3.73 | 1.43 | 11.24 | 3.15 | 1.54 | 5.25 | 2.10 | 1.05 |
| Designation | Tensile Strength | Yield Point (min) | Elongation (min) | Steel Code | C % max |
Si % max |
Mn % max |
P % max |
S % max |
| Cold Drawn Rail | 470~840Mpa | 355N/mm² | 8% | Q235 | 0.17 | 0.4 | 1.4 | 0.045 | 0.045 |
| Machined Rail | 410~520Mpa | 275N/mm² | 22% | Q235 | 0.21 | 0.4 | 1.5 | 0.045 | 0.045 |
| Hollow Guide Rail | 370~520Mpa | 235N/mm² | 22% | Q235 | 0.22 | 0.35 | 1.4 | 0.045 | 0.045 |
| Designation | Cold Drawn | Machined | High Precise BE | High Precise BEE | |
| Jiefeng Code | JFC | JFM | JFM-*BE | JFM-*BEE | |
| Roughness | Long. | 1.6μm~6.3μm | ≤1.6μm | ≤1.6μm | ≤1.6μm |
| Trasv. | 0.8μm~3.2μm | 0.8μm~3.2μm | 0.8μm~3.2μm | ||
| Straightness | f/m max | 0.7mm | 0.5mm | 0.2mm | 0.2mm |
| f/5m max | 3.5mm | 2.5mm | 1.0mm | 0.5mm | |
| Twist | R max | 2mm/5m | 2mm/5m | 1mm/5m | 0.5mm/5m |
| Angle | S max | ±0.10mm | ±0.10mm | ±0.05mm | ±0.05mm |
| S q1 | ±0.20mm | ±0.20mm | ±0.10mm | ±0.05mm | |
| S q2 | ±0.20mm | ±0.20mm | ±0.10mm | ±0.05mm | |
| Parallelism | h-h2 | _ | 0.20mm | 0.10mm | 0.05mm |
| Centering | a-b | 0.10mm | 0.10mm | 0.05mm | 0.03mm |
| Max clearance for connection | C max | 0.15mm | 0.15mm | 0.09mm | 0.05mm |
| Designation | Rust Prevention | Process | Outerdoor (Month) | Indoor (Month) |
| Cold Drawn Rail | Substitutional anti-rust oil or 74-2 hard coating anti-rust oil |
Greasing | 3~6 | 24 |
| Machined Rail | ||||
| Hollow Rail | Galvanized with trivalent chromium | Galvanization | 8~12 | 60 |
