Struggling to Grind Fatty Spices, Sugar, or Heat-Sensitive Powders Without Screen Clogging?
Materials high in oil, fat, or sugar content — like coriander, cumin, mustard, cocoa, crystal sugar, and pharmaceuticals — easily melt or cake when pressed against traditional screen meshes.
Premium Pulman's Pin Mill operates screenless using intermeshing rows of high-speed pins, achieving fine impact pulverizing without friction heat or mesh blinding.
High-Velocity Pin Impact Shearing
A pin mill features two discs (either one stationary and one rotating, or both counter-rotating) fitted with concentric rows of precision-machined alloy pins. Feed enters the disc center and is centrifugally accelerated outwards, passing through rows of pins at tip speeds up to 200 m/s for maximum kinetic impact.
Precision Alloy Pin Discs
Hardened alloy steel or stainless steel pins arranged in concentric rings for multi-stage shear.
Screenless Cool Chamber
No screen mesh eliminates friction heating, preventing oil melting in fatty spices and sugar caking.
VFD Rotor Speed Control
Adjustable rotor RPM fine-tunes top-cut particle size without stopping production.
Ideal for coriander, cumin, fennel, icing sugar, cocoa powder, starch, and pharma APIs.
Technical Specifications
Our Pin Mills are available in single-driven or counter-rotating dual-motor designs. Built in SS 304 / SS 316 cGMP sanitary finish, with optional cryogenic liquid nitrogen injection or water-jacketed cooling for extreme heat-sensitive applications.
Single rotor + stator or counter-rotating twin rotors.
Up to 200 m/s relative impact velocity.
SS 304 / SS 316 mirror polished contact surfaces.
50 kg/hr to 2,000+ kg/hr output.
Silent Features
Screenless operation eliminates mesh blinding and heat buildup
High relative tip speed delivers narrow particle size distribution
Hinged door access allows quick inspection and easy cleaning
Jacketed housing option for chilled water or cryogenic cooling
Preserves natural essential oils & aromas in fatty spices
Working Principle
Material is fed axially into the center of the grinding chamber. Centrifugal force accelerates the particles outwards through concentric intermeshing rows of high-speed rotating pins. The intense multi-stage pin impacts break particles down instantly. Powder exits centrifugally into an air-swept cyclone collector without passing through a screen mesh.
Why Choose Premium Pulman for Your Pin Mill
Grinding fatty, sticky, or sugar-rich products requires precise pin disc geometry and dynamic balancing to prevent machine vibration and thermal clogging. Premium Pulman has manufactured pin mills in Vatva, Ahmedabad for over two decades. Visit our demo testing facility to test your fatty spices or sugar samples firsthand.