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Soren20061110
JINGCHENG
3917290000 3904610000 3917390000
JINGCHENG Paraffin Hose, also called the 3D printer wax hose, is an electrically heated hose for 3D printing equipment, heat resistant up to 230°C and upgraded generation after generation with customers' printer models for a very close fit and very stable quality. This page explains the four mechanisms that clog wax feed lines — cold spots, end heat loss, idle cool-down and kinks — how the hose construction counters each one, and how to pick one of seven sizes without creating a new routing problem.
In wax-based 3D printing equipment, paraffin or printing wax has to stay liquid on its way from the melting reservoir to the print head. The feed hose is the longest heated part of that path, and it is where most blockages begin. Four mechanisms account for the majority of them:
Cold spots — one section of the hose runs cooler than the rest, wax starts to solidify on the inner wall and the bore narrows.
Heat loss at the ends — the transitions into fittings and connectors lose heat faster than the hose body.
Start-up and idle periods — wax left in the line cools while the printer waits, and the next print begins against a partial plug.
Kinks and tight loops — a hose bent below its minimum radius inside a compact printer frame restricts flow and stresses the heating layer.
JINGCHENG's paraffin hose, also called the 3D printer wax hose, is an electrically heated hose used on 3D printing equipment. 3D printing is a young industry, and this hose has been upgraded generation after generation as customers' printer models and technology have changed; the catalog describes its match to 3D printers as very high and its quality as very stable. Heat resistance is up to 230°C (higher on request).
Against cold spots: the heating layer is made of uniformly braided heating elements, which minimize the temperature difference along the inner wall. An even wall temperature is the main defense against wax building up in one section.
Against heat loss: high-efficiency insulation is chosen with the hose surface temperature in mind, so heat stays in the wax and the outer jacket remains safer to touch inside the printer.
Against start-up plugs: a temperature sensor — Type J or Type K thermocouple, Ni120, PT100 or PT1000 — lets the printer controller bring the hose to temperature and hold it there, including during idle periods.
Against kinks: the catalog bend radius column gives a hard limit for routing inside the frame; see the table below.
The paraffin hose uses the seven-size standard heated-hose table, from 1/4" to 1" inner diameter.
Small bores (1/4", 5/16", 3/8") have outer diameters of 9, 11 and 12.4 mm and minimum bend radii of 30, 40 and 60 mm. They suit compact printer frames where the hose must turn tightly between reservoir and head.
Medium and large bores (1/2" to 1") have outer diameters of 15.9 to 29.5 mm, and the bend radius jumps to 150 mm at 1/2", then 180, 260 and 300 mm. They suit larger wax volumes but need generous routing space.
Working pressure runs from 173 bar (2501 psi) at 1/4" down to 75 bar (1088 psi) at 1"; burst pressure from 690 bar (10005 psi) down to 300 bar (4350 psi). Wax feed is rarely pressure-limited, but stay on the row for your bore.
Upgrading a printer model? Re-check the route length and bend radius; a new frame layout can make a previously correct size kink.
Inner Diameter (inch) | Outer Diameter (mm ±0.2) | Working Pressure (bar) | Working Pressure (psi) | Burst Pressure (bar) | Burst Pressure (psi) | Min. Bend Radius (mm) |
|---|---|---|---|---|---|---|
1/4" | 9 | 173 | 2501 | 690 | 10005 | 30 |
5/16" | 11 | 158 | 2284 | 630 | 9137 | 40 |
3/8" | 12.4 | 135 | 1958 | 540 | 7830 | 60 |
1/2" | 15.9 | 118 | 1704 | 470 | 6815 | 150 |
5/8" | 19 | 88 | 1269 | 350 | 5075 | 180 |
3/4" | 22.6 | 85 | 1234 | 340 | 4930 | 260 |
1" | 29.5 | 75 | 1088 | 300 | 4350 | 300 |
Data source: JINGCHENG 2025 Electrically Heated Hose Catalog. Heat resistance up to 230°C; higher temperature on request. Confirm the rating at your operating temperature with our engineers when ordering.
Keep every bend at or above the listed radius, especially where the hose leaves the reservoir and enters the print head.
Do not twist the hose sideways during assembly; torsion can cause leakage, flow loss, hose damage or fire.
Wire the hose according to its technical data and the supplied pin table, so the controller reads the correct sensor.
Keep the ambient conditions within the catalog window of -40°C to +55°C and relative humidity not above 85%.
Each JINGCHENG paraffin hose is built to the printer. Catalog options include supply voltage of 380 Vac, 220 Vac, 110 Vac, 12 Vdc or other; the sensor types listed above; lengths of 3 m, 4.5 m, 5 m, 6 m, 10 m or other; inner diameters of Φ8, Φ12, Φ16, Φ19, Φ25 mm or other; rated power of 110, 150, 170 or 200 W/m or other; and US, British or metric threads with a defined pin layout at each end.
A model code such as JCH-200-16-B-3X220-P2-8 reads as 200°C, Φ16 mm ID, inner-tube type B, three-phase four-wire 220 V, PT100 two-wire sensor and 8 MPa working pressure.
Tell us the wax you print with and its working temperature, the route length from reservoir to print head, the bore you need, the supply voltage, the sensor read by your controller and the fittings at each end. JINGCHENG engineers will match a wax feed hose specification to your printer model and quote it.
