Open Rubber Mixing Mill Two Roll Rubber Plastic Mixing Machine

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two roll open mixing mill, rubber two roll mill, silicone mixing mill, lab plastic mixing mill, compound mixing mill, PVC masterbatch mixing equipment

Open Rubber Mixing Mill Two Roll Plastic Silicone Mixing Mill with Heating & Water‑Cooling Option

The HZ‑7015A Open Rubber Mixing Mill is two‑roll open‑type mixing equipment for rubber and polymer industry. It is offered in two configurations: electric‑heating HZ‑7015A and water‑cooling HZ‑7015B. The alloy chilled cast‑iron rollers perform plasticating, mixing and shearing for raw rubber, silicone, PVC, color masterbatch and various compound materials. This mill adopts PID temperature control, adjustable roller gap and variable roller speed ratio. Multiple collision‑type emergency‑stop safety mechanisms guarantee operator safety. It complies with GB 6038‑2006, GB/T 13577‑1992 standards, suitable for laboratory R&D, formula testing and small‑batch production.

Equipment summary
Main functions
Corresponding standard
Technical parameters

HZ‑7015A open mixing mill consists of mirror‑polished vanadium‑titanium chilled cast‑iron rollers, adjustable gap handwheel, frequency‑conversion drive system, touch‑screen controller, heating / water‑cooling circulation system and multi‑point emergency‑stop safety assembly.

Roller hardness reaches HRC 50‑60, with inner cavity precision machining to realize fast and uniform heating or cooling. The machine supports adjustable roller gap from 0.1‑10 mm and multiple optional roller speed ratios. Dual‑motor independent drive realizes different rotating speed for front and rear rollers. Hardened reducer and imported bearings reduce noise and energy consumption. Auto‑lubrication system protects transmission components.

Multiple sizes are available: 4‑inch, 6‑inch, 8‑inch, 10‑inch. Widely applied for rubber, silicone, plastic, PVC and color masterbatch mixing and plasticating work.

Compliant Standards：‑ GB 6038‑2006 ‑ GB/T 13577‑1992 ‑ HG/T 3108‑199

Two Working Versions Optional
HZ‑7015A electric‑heating type / HZ‑7015B water‑cooling type, meet different material temperature‑processing demands.
High‑Hardness Alloy Rollers
Vanadium‑titanium chilled cast‑iron rollers, HRC 50‑60 hardness, mirror chrome‑plated surface, wear‑resistant, fast uniform heat transfer.
Precision Adjustable Roller Gap
Manual handwheel adjustment, roller gap 0.1‑10 mm adjustable, digital display for gap value, control sheet thickness accurately.
Dual‑Motor Independent Frequency‑Conversion Drive
Realize variable front‑rear roller speed ratio; multiple speed ratio options available, low running noise, high transmission efficiency.
Multi‑Point Emergency‑Stop Safety Protection
8‑sets collision‑type emergency‑stop devices around the machine with emergency‑stop inversion function, greatly improve operation safety.
PID Constant Temperature Control
Precise PID temperature control, temperature range RT~200℃, stable roller surface temperature.
Automatic Lubrication System
Auto oil supply for transmission parts, reduce wear, extend service life, avoid damage caused by human‑neglected lubrication.
Multiple Sizes Available
4‑inch /6‑inch /8‑inch /10‑inch models for selection, cover lab test and small‑batch production capacity.

Item	HZ‑7015-4	HZ‑7015‑6	HZ‑7015‑8	HZ‑7015‑10
Model Type	A(Electric‑heat)/B(Water‑cooling)	A(Electric‑heat)/B(Water‑cooling)	A(Electric‑heat)/B(Water‑cooling)	A(Electric‑heat)/B(Water‑cooling)
Roller Diameter	120 mm(4")	160 mm(6")	200 mm(8")	250 mm(10")
Roller Face Width	420 mm	420 mm	420 mm	420 mm
Mixing Capacity	0.3‑2 kg	0.5‑3 kg	1‑10 kg	2‑15 kg
Temperature Range	RT‑200℃	RT‑200℃	RT‑200℃	RT‑200℃
Control Mode	PID temperature control	PID temperature control	PID temperature control	PID temperature control
Roller Gap	0.1‑10 mm adjustable	0.1‑10 mm adjustable	0.1‑10 mm adjustable	0.1‑10 mm adjustable
Roller Speed Ratio	1:1.22 /1:1.35 /1:1.4	1:1.22 /1:1.35 /1:1.4	1:1.1 /1:1.22 /1:1.4 /1:1.7	1:1.1 /1:1.22 /1:1.4 /1:1.7
Roller Hardness	HRC 50‑60	HRC 50‑60	HRC 50‑60	HRC 50‑60
Safety Device	8 PCS collision emergency‑stop, emergency‑stop inversion	8 PCS collision emergency‑stop, emergency‑stop inversion	8 PCS collision emergency‑stop, emergency‑stop inversion	8 PCS collision emergency‑stop, emergency‑stop inversion
Motor Power	4.5 kW	5.5 kW	7.5 kW	15 kW
Power Supply	3‑Phase 380V	3‑Phase 380V	3‑Phase 380V	3‑Phase 380V
Overall Dimension(m)	11.11.4	11.11.5	1.51.21.5	1.51.31.6
Approx. Weight	2 T	2.5 T	3.4 T	4 T