900G Auto Loader for Plastic Injection Molding Machines — In Stock & Ready to Ship If your operators are still climbing ladders to pour resin into the hopper by hand, you're losing time, wasting labour, and risking material contamination on every single shift. It's the kind of thing that feels manageable when you're running one machine — until you're running five, and half your floor staff are just feeding hoppers all day. The 900G auto loader solves that problem cleanly and cheaply. It's one of the most practical pieces of auxiliary equipment you can add to an injection molding machine, and it pays for itself faster than almost anything else on the production floor. We have the 900G in stock and ready to ship. Here's everything you need to know. What Is a 900G Auto Loader? A 900G auto loader — also called a vacuum hopper loader or automatic suction feeder — is a compact unit that sits on top of your injection molding machine's hopper or hopper dryer inlet. Using a vacuum motor, it automatically draws plastic pellets or granules from a material bin or bag on the floor and delivers them directly into the hopper above. The '900G' refers to the motor capacity — a 900-gram motor size that gives it strong enough suction to handle most standard pellet materials over typical conveying distances, we have 1.5 kw to 4.5 kw different motors available for making it the most widely used size across small to big-size injection molding machines. The process is fully automatic. When the material level in the hopper drops below a set point, the loader kicks in, draws material up through a flexible hose, fills the hopper, and shuts off. No manual handling. No interruptions to the machine cycle. No spillage on the floor. Why Your Production Floor Needs One It sounds like a small thing — automating the material feed. But the downstream effects on your operation are more significant than most people expect. Labour savings are immediate. Without an auto loader, someone has to monitor resin levels and top up hoppers manually throughout every shift. On a multi-machine floor, that's a job by itself. The 900G eliminates that entirely. Your operators can focus on quality checks, mould changes, and output — not climbing stools with 25kg bags. Material contamination goes down. Every time a bag is opened and poured by hand, there's a chance of foreign material getting into the hopper — dust, moisture from the bag exterior, debris from the floor. A closed vacuum conveying system removes that risk completely. Production continuity improves. A machine that runs dry mid-cycle causes a short shot. Depending on what you're moulding, that can mean a scrapped part, a tool left under pressure, or a cycle that needs to be manually restarted. Auto loaders eliminate that failure mode. It's surprisingly low cost. The 900G is one of the most accessible pieces of auxiliary equipment in the plastics industry. The return on investment — in labour hours saved alone — is typically measured in weeks, not months. Key Features Explained Stainless Steel Hopper Body The material contact surfaces are stainless steel throughout — no plastic inner liners that absorb colour or contaminate light-coloured resins. Easy to wipe down during material changeovers, and resistant to the wear that pellets cause over years of continuous use. Microcomputer Control with Digital Timer The control unit manages loading cycles automatically based on a timed interval or level sensor. You set the cycle time once during commissioning and the unit runs itself. Adjustments are simple if you change material or throughput rate. Overload & Material Shortage Alarm If the motor encounters a blockage or runs without material for too long, the alarm triggers and the unit shuts down safely. You get a warning before anything gets damaged — no burnt-out motors from running dry, no blocked hoses left under suction pressure. Reverse Blow Function Between loading cycles, the unit automatically reverses airflow to clear the filter. This keeps suction strong over long production runs without manual filter cleaning between shifts. It's a small detail that makes a big difference on overnight runs. Independent Filter System The filter housing sits separately from the hopper for easy access. On material changeover, you can clear the filter in under a minute without dismantling the unit. Clean filters mean consistent suction — and consistent suction means consistent fill levels in the hopper. Detachable Design — Controller Separate from Hopper On the 900G, the control unit and motor are housed separately from the hopper that mounts on the machine. This means the heavy components sit at floor level or on a bracket, while only the lightweight hopper sits on the machine throat. Installation is more stable, vibration to the machine is reduced, and maintenance access is far easier. What Materials Can the 900G Handle? The 900G auto loader is suitable for conveying most standard thermoplastic pellet and granule materials used in injection molding: ABS, HIPS, PS — standard pellet size, conveys easily PP and PE — lightweight pellets, excellent suction efficiency Nylon (PA6, PA66) — works well; ensure material is sealed to prevent moisture pickup during conveying PET — suitable for pellets; regrind flake may need larger hopper capacity PC and PC/ABS blends — conveys cleanly with stainless steel contact surfaces PMMA (Acrylic) — low-abrasion conveying, stainless interior prevents contamination POM, PBT, TPU — all handled without issue at standard pellet sizes Regrind and recycled granules — works with most regrind up to standard pellet size; irregular or oversized regrind may need screening first The 900G is not typically suited to powder materials or extremely fine-ground materials — for those applications, a dedicated powder loader or screw conveyor is more appropriate. Which Machines Is the 900G Suited For? The 900G is the most widely used auto loader size for small to medium injection molding machines — typically machines in the 90T to 400T clamping force range, where the hourly resin consumption sits comfortably within the loader's conveying capacity. For larger machines (500T and above) with high shot weights and fast cycle times, a higher-capacity loader — 1200G or 1500G — is usually a better fit to keep up with material demand. If you're not sure which size suits your machine, share your machine tonnage and cycle time with us and we'll confirm the right unit. Installation — Simpler Than Most People Expect A lot of customers assume installing an auto loader is a complex job. It really isn't. The hopper mounts directly onto the inlet of your machine's hopper or hopper dryer using the standard flange connection. The flexible conveying hose connects the hopper to the pickup lance, which drops into your material bin. The control unit plugs into a standard single-phase socket. The whole installation — including commissioning and timer adjustment — typically takes under an hour for someone who's done it once. We supply full installation instructions with every unit, and our team is available by phone if you run into any questions during setup. Frequently Asked Questions 'How far can the 900G convey material?' In standard configuration with the supplied hose, the 900G handles vertical lifts of around 4–6 metres comfortably. Horizontal runs reduce that effective distance somewhat. If you need longer conveying distances — say, from a central silo — the detachable 900G with a high-pressure blower motor handles that better. 'Can one auto loader feed multiple machines?' A single 900G is designed for one machine. For multi-machine feeding from a central material source, you'd need a central conveying system with individual hoppers per machine. We can advise on central feeding setups if that's your direction. 'Will it work with regrind material?' Yes, for standard regrind granules of similar size to virgin pellets. Very irregular or bulky regrind flake may cause bridging in the hose or filter. A quick test with a sample usually confirms compatibility before full installation. 'Does it need a compressed air supply?' No. The 900G is a vacuum-based loader — it runs entirely on its own electric motor. No compressed air line needed, which makes installation much simpler in facilities where air points are limited. 'What maintenance does it need?' Minimal. The filter should be checked and cleaned periodically — the reverse blow function does most of this automatically, but a manual check every week or two is good practice. The motor brushes will eventually wear after years of use and can be replaced as a low-cost spare part. 'What's the lead time?' We have stock available now. Most orders ship within 2–5 working days. Ready to Stop Feeding Hoppers by Hand? The 900G auto loader is one of those purchases you wonder why you waited on. Simple, reliable, and it changes the rhythm of your whole production floor from the first shift it's running. Tell us what machine you're running it on and we'll confirm compatibility and get you a clear price.