{"id":3216,"date":"2026-02-28T04:41:28","date_gmt":"2026-02-28T04:41:28","guid":{"rendered":"https:\/\/lowayequipment.com\/?page_id=3216"},"modified":"2026-09-11T07:06:18","modified_gmt":"2026-09-11T07:06:18","slug":"twin-shaft-channel-grinders","status":"publish","type":"page","link":"https:\/\/lowayequipment.com\/de\/twin-shaft-channel-grinders\/","title":{"rendered":"Twin-Shaft Channel Grinders &#038; Sewage Macerators"},"content":{"rendered":"<p><script>\/* eng page flag: lets CSS hide the theme page-title *\/\ndocument.body.classList.add('lw-v7');<\/script><\/p>\n<div class=\"lw-home lw-eng lw-tsc\">\n<!-- ===== HERO ===== --><\/p>\n<header class=\"lw-tsc-hero\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Inline Solids Reduction for Pump Stations &amp; Sludge Lines<\/span><\/p>\n<h1>Twin-Shaft Channel Grinders &amp; Sewage Macerators<\/h1>\n<p class=\"lw-lead\">High-torque dual-shaft grinders for pump protection, FOG capture, and rag shredding in municipal and industrial headworks. SS304 or SS316 cutters, IP55 or IP68 drive \u2014 sized to the solids you actually handle, not a catalog curve.<\/p>\n<div class=\"lw-btn-row\">\n      <a class=\"lw-btn lw-btn-primary\" href=\"\/de\/contact\/\">Request Specification Sheet<\/a><br \/>\n      <a class=\"lw-btn lw-btn-ghost\" href=\"#selection\">Start a Selection Checklist \u2192<\/a>\n    <\/div>\n<div class=\"lw-tsc-hero-imgs\">\n      <img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2026\/02\/Loway-Factory-high-torque-twin-shaft-channel-grinders.png\" alt=\"Loway factory twin-shaft channel grinders on stainless frames before shipment.\"><br \/>\n      <img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2026\/02\/Twin-Shaft-Channel-Grinders-Sewage-Macerators-Loway-Equipment-1.png\" alt=\"Loway factory floor with a navy-frame twin-shaft grinder and multiple green-shell units lined up for shipment.\">\n    <\/div>\n<div class=\"lw-tsc-stats\">\n<div class=\"lw-tsc-stat\">\n<div class=\"v\">5\u2013110 m\u00b3\/h<\/div>\n<div class=\"l\">Flow Range<\/div>\n<\/div>\n<div class=\"lw-tsc-stat\">\n<div class=\"v\">1.5\u201322 kW<\/div>\n<div class=\"l\">Drive Power<\/div>\n<\/div>\n<div class=\"lw-tsc-stat\">\n<div class=\"v\">SS304 \/ SS316<\/div>\n<div class=\"l\">Cutter Material<\/div>\n<\/div>\n<div class=\"lw-tsc-stat\">\n<div class=\"v\">IP55 \/ IP68<\/div>\n<div class=\"l\">Drive Protection<\/div>\n<\/div><\/div>\n<\/p><\/div>\n<\/header>\n<p><!-- ===== WHY WE NEED A GRINDER ===== --><\/p>\n<section class=\"lw-sec lw-band-mist\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Why a Twin-Shaft Grinder<\/span><\/p>\n<h2>Three Failure Modes a Grinder Prevents<\/h2>\n<p class=\"lw-lead\">A twin-shaft macerator isn&#8217;t a luxury \u2014 it&#8217;s the cheapest insurance at the headworks. Every clogged pump, every rag-wrapped impeller, every bypass event traces back to solids that should have been intercepted upstream.<\/p>\n<div class=\"lw-tsc-types lw-grid\">\n<div class=\"lw-tsc-type\">\n<div class=\"num\">01 \/ Pump Protection<\/div>\n<h3>Stop Rag and Rag-Ball Damage<\/h3>\n<p>Rags, wipes, hair mats, and feminine products wrap pump impellers within hours of a heavy flow event. Cutting them to 6\u201310 mm particles at the channel wall prevents cavitation loss, seal damage, and the emergency callout that follows.<\/p>\n<\/p><\/div>\n<div class=\"lw-tsc-type\">\n<div class=\"num\">02 \/ Volume Reduction<\/div>\n<h3>Thicken What Reaches the Press<\/h3>\n<p>Coarse fibers inflate sludge volume and bleed through downstream screens, choking screw presses and increasing polymer demand. Maceration at the inlet produces a denser, more uniform feed for dewatering and a steadier cake on filter presses.<\/p>\n<\/p><\/div>\n<div class=\"lw-tsc-type\">\n<div class=\"num\">03 \/ FOG &amp; Rag Capture<\/div>\n<h3>Stop FOG Balls Reaching the Aeration Tank<\/h3>\n<p>Fats, oils, and grease congeal into rag-balls that float through bar screens and accumulate on diffusers. Sheared early, FOG stays in the primary stage where it can be skimmed, not in the activated sludge where it kills aeration efficiency.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== WORKING PRINCIPLE ===== --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Working Principle<\/span><\/p>\n<h2>How the Twin-Shaft Shears Solids<\/h2>\n<p class=\"lw-lead\">Two hexagonal shafts, each studded with heat-treated alloy cutters, counter-rotate at a controlled differential. Solids are not crushed \u2014 they are caught, guided into the cutting gap, and sheared against the stationary comb below.<\/p>\n<div class=\"lw-tsc-how\">\n<div class=\"lw-tsc-how-diagram\">\n        <img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2026\/02\/Loway-high-torque-twin-shaft-channel-grinders-features.png\" alt=\"Cutaway view of a Loway twin-shaft channel grinder showing hexagonal shafts and toothed cutters.\"><\/p>\n<div class=\"cap\">Two hex shafts, six cutters per shaft, counter-rotating for clean shear rather than crushing.<\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-steps\">\n<div class=\"lw-tsc-step\">\n<div class=\"n\"><\/div>\n<div>\n<h3>Mandatory Interception<\/h3>\n<p>Solids in the channel flow are captured by the cutter gaps. There is no straight-through path \u2014 every object entering the cutting zone must be sheared before it can pass.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-step\">\n<div class=\"n\"><\/div>\n<div>\n<h3>Guided Shredding<\/h3>\n<p>The differential rotation of the two shafts creates a scissors action. Long fibers are pulled into the cutting gap and progressively shortened, rather than wrapped around a single rotating drum.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-step\">\n<div class=\"n\"><\/div>\n<div>\n<h3>Differential Shearing<\/h3>\n<p>Cutters are sized to the working gap, and the gap is held to a tolerance in the 0.1\u20130.3 mm range. The result is a clean shear, not a tear \u2014 particles stay inside the designed PSD band instead of smearing.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-step\">\n<div class=\"n\"><\/div>\n<div>\n<h3>Safe Flow-Through<\/h3>\n<p>Sheared particles leave the cutting zone suspended in the mainstream flow. Liquids pass with no measurable head loss at design flow; only oversize objects ever touch the cutters.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== ENGINEERING DETAILS ===== --><\/p>\n<section class=\"lw-sec lw-band-navy\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Engineered for Zero Downtime<\/span><\/p>\n<h2>Build Details That Matter in the Field<\/h2>\n<p class=\"lw-lead\" style=\"color:rgba(255,255,255,.78);max-width:780px\">A grinder running 24 hours a day needs more than torque. It needs shafts that don&#8217;t bend, cutters that don&#8217;t chip, drives that survive a flooded channel, and a control system that clears a jam before an operator has to drive in.<\/p>\n<div class=\"lw-tsc-eng\">\n<div class=\"lw-tsc-eng-card\">\n<h3>Hexagonal Shaft Design<\/h3>\n<p>Solid hex shafts (not round tubes) carry torque across the full cutter stack without twisting under a peak load. Each cutter is keyed to the shaft so backlash stays zero over the bearing life.<\/p>\n<\/p><\/div>\n<div class=\"lw-tsc-eng-card\">\n<h3>Heat-Treated Alloy Cutters<\/h3>\n<p>Cutter tips are vacuum-degassed alloy steel, quenched and tempered to 58\u201362 HRC. Hard enough to shear abrasive wipes, tough enough not to chip on a stray metal fragment that bypasses upstream screening.<\/p>\n<\/p><\/div>\n<div class=\"lw-tsc-eng-card\">\n<h3>Intelligent Auto-Reverse (Anti-Jam)<\/h3>\n<p>Current sensing on each shaft triggers a programmed reverse cycle when torque exceeds the jam threshold. The grinder clears itself, logs the event, and returns to forward rotation without an operator call-out.<\/p>\n<\/p><\/div>\n<div class=\"lw-tsc-eng-card\">\n<h3>IP68 Submersible Drive<\/h3>\n<p>Flooded-channel duty rated: the gearmotor is sealed to IP68 for continuous submergence. For dry-channel installations, the IP55 footprint-saved drive reduces headroom requirements.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== SPECS TABLE ===== --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Technical Specifications<\/span><\/p>\n<h2>Twin-Shaft Channel Grinder \u2014 Model Range<\/h2>\n<p class=\"lw-lead\">Indicative ranges for typical headworks duty. Final sizing depends on solids profile, channel geometry, peak vs. average flow, and duty cycle \u2014 confirm with bench test against your actual rag, FOG, and grit mix.<\/p>\n<div class=\"lw-tsc-specs-wrap\">\n<table class=\"lw-tsc-specs\">\n<thead>\n<tr>\n<th>Model<\/th>\n<th>Channel Width<\/th>\n<th>Throughput<\/th>\n<th>Drive Power<\/th>\n<th>Shaft \/ Cutter<\/th>\n<th>Cutter Material<\/th>\n<th>Working Gap<\/th>\n<th>Drive IP<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><b>TSC-300<\/b><\/td>\n<td>300 mm<\/td>\n<td>5\u201325 m\u00b3\/h<\/td>\n<td>1.5\u20133 kW<\/td>\n<td>Hex 40 \/ 5-tooth<\/td>\n<td>SS304 \/ SS316<\/td>\n<td>0.2 mm<\/td>\n<td>IP55 \/ IP68<\/td>\n<\/tr>\n<tr>\n<td><b>TSC-450<\/b><\/td>\n<td>450 mm<\/td>\n<td>15\u201345 m\u00b3\/h<\/td>\n<td>3\u20135.5 kW<\/td>\n<td>Hex 50 \/ 5-tooth<\/td>\n<td>SS304 \/ SS316<\/td>\n<td>0.2 mm<\/td>\n<td>IP55 \/ IP68<\/td>\n<\/tr>\n<tr>\n<td><b>TSC-600<\/b><\/td>\n<td>600 mm<\/td>\n<td>30\u201370 m\u00b3\/h<\/td>\n<td>5.5\u201311 kW<\/td>\n<td>Hex 60 \/ 7-tooth<\/td>\n<td>SS304 \/ SS316<\/td>\n<td>0.25 mm<\/td>\n<td>IP55 \/ IP68<\/td>\n<\/tr>\n<tr>\n<td><b>TSC-800<\/b><\/td>\n<td>800 mm<\/td>\n<td>50\u2013110 m\u00b3\/h<\/td>\n<td>11\u201322 kW<\/td>\n<td>Hex 80 \/ 7-tooth<\/td>\n<td>SS316 standard<\/td>\n<td>0.3 mm<\/td>\n<td>IP68<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<p class=\"lw-tsc-warn\">All figures are typical for clean water at 20 \u00b0C with a 6\u201325 mm working gap. Throughput drops as solids loading rises \u2014 confirm with a bench test against your worst-case rag and FOG mix before final sizing. Lubricant, sacrificial cutter, and cutter-replacement service kits are specified per channel width.<\/p>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== CONFIGURATION ===== --><\/p>\n<section class=\"lw-sec lw-band-mist\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Configuration<\/span><\/p>\n<h2>Match the Build to the Solids<\/h2>\n<p class=\"lw-lead\">A grinder is not one part number. Shaft configuration, cutter count, material grade, drive type, and control package each move with the application. Pick the combination, not the model.<\/p>\n<div class=\"lw-tsc-config\">\n<div class=\"lw-tsc-config-row\">\n<div class=\"lbl\">Shaft Configuration<small>how the cutting head is laid out<\/small><\/div>\n<div class=\"opts\">\n<div class=\"lw-tsc-cfg-opt\"><b>Twin-Shaft<\/b><span>Default for solids &gt; 6 mm. Counter-rotating shear, lowest jam rate.<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>Single-Drum<\/b><span>Lighter duty and FOG fine-shredding. Higher throughput per kW on dilute rags.<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>No-Drum Inline<\/b><span>Drop-in pipe replacement, very high flow, fibrous loads only.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-config-row\">\n<div class=\"lbl\">Cutter Material<small>depends on chemical and chloride exposure<\/small><\/div>\n<div class=\"opts\">\n<div class=\"lw-tsc-cfg-opt\"><b>SS304<\/b><span>Standard for municipal and most industrial waters.<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>SS316L<\/b><span>Specified for chloride-bearing effluent (food salting, marine, brine).<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>Alloy-Tipped<\/b><span>Carbide-tipped cutters for abrasive grit or grit-heavy flows.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-config-row\">\n<div class=\"lbl\">Drive &amp; Control<small>how the grinder reacts to a jam<\/small><\/div>\n<div class=\"opts\">\n<div class=\"lw-tsc-cfg-opt\"><b>IP55 \/ Direct-On-Line<\/b><span>Dry-channel installation, lowest cost, mains or VFD start.<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>IP68 Submersible<\/b><span>Flooded-channel and wet-well installations.<\/span><\/div>\n<div class=\"lw-tsc-cfg-opt\"><b>Auto-Reverse PLC<\/b><span>Current-sensed anti-jam cycle with event log and remote I\/O.<\/span><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p class=\"lw-tsc-warn\">Shaft configuration and material are not interchangeable in the field \u2014 confirm both at order entry. Auto-reverse PLC is recommended on any channel above 600 mm width where manual unjamming requires confined-space entry.<\/p>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== APPLICATIONS ===== --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Industrial Applications<\/span><\/p>\n<h2>Where Twin-Shaft Channel Grinders Earn Their Keep<\/h2>\n<p class=\"lw-lead\">Five application streams where macerators are specified rather than optional. Each pairs with a Loway installed base; click through to the matching industry page for case studies.<\/p>\n<div class=\"lw-tsc-apps lw-grid\">\n      <a class=\"lw-tsc-app\" href=\"\/de\/applications\/municipal-sewage-sludge\/\"><\/p>\n<div class=\"img\"><img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/02\/\u6c61\u6c34\u5904\u7406\u5382-copy.svg\" alt=\"\"><\/div>\n<h3>Municipal Headworks<\/h3>\n<p>Pump-station wet-wells, primary screens, and sludge lines in municipal sewage plants.<\/p>\n<p>        <span class=\"cta\">Municipal Sewage Sludge<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-app\" href=\"\/de\/applications\/food-beverage\/\"><\/p>\n<div class=\"img\"><img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/\u98df\u54c1\u539f\u6599.png\" alt=\"\"><\/div>\n<h3>Food &amp; Beverage Plants<\/h3>\n<p>Process-water streams, FOG-rich effluent, and solids from washing\/cleaning lines.<\/p>\n<p>        <span class=\"cta\">Food &amp; Beverage<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-app\" href=\"\/de\/applications\/coal-preparation\/\"><\/p>\n<div class=\"img\"><img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/\u9020\u7eb8\u548c\u7eb8\u5236\u54c1\u4e1a.png\" alt=\"\"><\/div>\n<h3>Pulp &amp; Paper Mills<\/h3>\n<p>Rejects handling, fiber recovery lines, and screening of broke and recycle streams.<\/p>\n<p>        <span class=\"cta\">Pulp &amp; Paper Case<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-app\" href=\"\/de\/applications\/mining-tailings\/\"><\/p>\n<div class=\"img\"><img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/11\/\u51b6\u91d1\u8f67\u8f8a.png\" alt=\"\"><\/div>\n<h3>Mining &amp; Metals Tailings<\/h3>\n<p>Slurry conditioning lines, tailings dewatering feed, and concentrate handling.<\/p>\n<p>        <span class=\"cta\">Mining Tailings<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-app\" href=\"\/de\/applications\/battery-materials\/\"><\/p>\n<div class=\"img\"><img decoding=\"async\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/02\/\u65b0\u80fd\u6e90.svg\" alt=\"\"><\/div>\n<h3>Battery &amp; Cathode Plants<\/h3>\n<p>Lithium-ion precursor streams, brine pretreatment, and lithium carbonate filtration feed.<\/p>\n<p>        <span class=\"cta\">Battery Materials<\/span><br \/>\n      <\/a>\n    <\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== SELECTION CHECKLIST ===== --><\/p>\n<section id=\"selection\" class=\"lw-sec lw-band-mist\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Selection Checklist<\/span><\/p>\n<h2>Five Questions Before You Spec<\/h2>\n<p class=\"lw-lead\">Walk these with the engineer who knows the channel, not the catalog. Most misapplied grinders fail on at least one of these points.<\/p>\n<div class=\"lw-tsc-sel\">\n<div class=\"lw-tsc-sel-step\">\n<div class=\"b\">1<\/div>\n<div>\n<h3>What is the peak channel flow, and how often does it occur?<\/h3>\n<p>Use peak wet-weather flow, not average daily flow \u2014 that&#8217;s the duty the cutter gaps must pass without head-loss complaints from upstream.<\/p>\n<div class=\"tip\">If you only have average daily flow, ask the plant operator for the wet-weather number, not the design number.<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-sel-step\">\n<div class=\"b\">2<\/div>\n<div>\n<h3>What is the channel width and the available headroom?<\/h3>\n<p>Shaft configuration, drive housing, and racking all need to fit inside the channel wall \u2014 measure the wetted width and the lid-to-floor clearance before selecting TSC-300 vs. TSC-800.<\/p>\n<div class=\"tip\">For retrofits, the available headroom is often tighter than the channel width.<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-sel-step\">\n<div class=\"b\">3<\/div>\n<div>\n<h3>What is the worst-case rag and FOG mix?<\/h3>\n<p>Personal-care wipes, hair matting, and FOG rag-balls demand a tougher build than a dilute industrial fiber stream. Send us a sample of the worst rag you&#8217;ve actually pulled off a screen \u2014 that drives cutter density, not a default.<\/p>\n<div class=\"tip\">A bench test with your sample is cheaper than an undersized unit on site.<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-sel-step\">\n<div class=\"b\">4<\/div>\n<div>\n<h3>Flooded or dry channel \u2014 drive rating?<\/h3>\n<p>A grinder mounted in a wet-well needs IP68 submersible rating throughout the drive. A dry-channel installation is fine on IP55 and gains headroom on the motor.<\/p>\n<div class=\"tip\">If the channel ever floods in a wet-weather event, IP68 is the safer spec.<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-sel-step\">\n<div class=\"b\">5<\/div>\n<div>\n<h3>How will the operator clear a jam \u2014 and from where?<\/h3>\n<p>Auto-reverse PLC handles 95% of jams in normal service. For larger channels, plan access for confined-space entry and have a spare cutter cartridge on the shelf before commissioning.<\/p>\n<div class=\"tip\">Cutter-replacement kits and on-site servicing are quoted alongside the unit, not after.<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== FAQ ===== --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Frequently Asked Questions<\/span><\/p>\n<h2>Twin-Shaft Channel Grinder FAQs<\/h2>\n<p class=\"lw-lead\">Short, technical answers to the questions our engineering team hears most often. If yours isn&#8217;t here, ask \u2014 quoting is free.<\/p>\n<div class=\"lw-tsc-faq\">\n<details>\n<summary>How does a twin-shaft grinder differ from a single-drum grinder?<\/summary>\n<p>A twin-shaft grinder uses two counter-rotating shafts to create a scissor-like cutting action. It handles fibrous, stringy, and high-strength solids (wipes, rags, hair matting) without the wrapping risk that plagues single-drum units. A single-drum grinder is a better fit for low-strength, FOG-rich effluent where higher throughput per kW matters more than peak torque.<\/p>\n<\/details>\n<details>\n<summary>What particle size comes out of the cutter?<\/summary>\n<p>Particle size is set by the cutter diameter and the gap between the two shafts, typically 6\u201310 mm for standard build. The working gap is held to \u00b10.1 mm tolerance so the particle-size distribution stays consistent across the PSD curve, not skewed by cutter wear.<\/p>\n<\/details>\n<details>\n<summary>Can the grinder run dry?<\/summary>\n<p>Brief dry runs during commissioning are fine, but the cutter bearings and shaft seals are rated for fully-flooded or fully-submerged duty \u2014 not continuous dry operation. A dry-channel installation should still carry a low-level float switch to prevent dry-running in seasonal low-flow periods.<\/p>\n<\/details>\n<details>\n<summary>What is the difference between IP55 and IP68 on the drive?<\/summary>\n<p>IP55 protects against water jets, dust, and the typical wet-channel ambient. IP68 is rated for continuous submergence to a specified depth and is required for wet-well and below-grade installations. Both use the same cutter stack and controller \u2014 only the gearmotor seal differs.<\/p>\n<\/details>\n<details>\n<summary>How do you handle a jam?<\/summary>\n<p>An auto-reverse PLC monitors current on each shaft. When the jam threshold is exceeded, the drive reverses for a programmed period, then attempts forward rotation. If the jam persists, the drive trips to a fault state with a remote alarm \u2014 operators clear via the access hatch above the cutting zone, not the channel wall.<\/p>\n<\/details>\n<details>\n<summary>What spare parts should we keep on the shelf?<\/summary>\n<p>One full set of cutters (matched pairs), one set of shaft seals, and one cutter-cartridge extraction tool. On units above 600 mm channel width, we recommend keeping a spare PLC controller module if there&#8217;s no on-site Loway service partner.<\/p>\n<\/details><\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== CTA ===== --><\/p>\n<section class=\"lw-tsc-cta\">\n<div class=\"lw-container lw-tsc-cta-inner\">\n<div>\n      <span class=\"lw-kicker\">Spec a Twin-Shaft Grinder<\/span><\/p>\n<h2>Need a Twin-Shaft Grinder for Your Headworks?<\/h2>\n<p>Send us your channel width, peak wet-weather flow, and a sample of the worst rag you&#8217;ve actually pulled off a screen. We&#8217;ll size the model, cutter grade, and drive package against your duty cycle \u2014 and quote it in writing.<\/p>\n<div class=\"lw-btn-row\">\n        <a class=\"lw-btn lw-btn-primary\" href=\"\/de\/contact\/\">Talk to the Loway Team<\/a><br \/>\n        <a class=\"lw-btn lw-btn-ghost\" href=\"\/de\/engineering\/selection-sizing\/\">Open Selection &amp; Sizing \u2192<\/a>\n      <\/div>\n<\/p><\/div>\n<div class=\"lw-tsc-cta-cards\">\n      <span class=\"lw-tsc-cta-card\"><br \/>\n        <span class=\"h\">Spec Sheet &amp; Drawing<\/span><br \/>\n        <span class=\"p\">TSC model sheet + GA drawing, in PDF and DWG, sent within one working day.<\/span><br \/>\n        <span class=\"arr\">Request file<\/span><br \/>\n      <\/span><br \/>\n      <span class=\"lw-tsc-cta-card\"><br \/>\n        <span class=\"h\">Spare Cutters &amp; Service<\/span><br \/>\n        <span class=\"p\">Cutter cartridges, shaft seals, and on-site commissioning quoted with the unit.<\/span><br \/>\n        <span class=\"arr\">Ask the team<\/span><br \/>\n      <\/span>\n    <\/div>\n<\/p><\/div>\n<\/section>\n<p><!-- ===== RELATED PRODUCTS ===== --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n    <span class=\"lw-kicker\">Downstream of the Grinder<\/span><\/p>\n<h2>Complementary Equipment from Loway<\/h2>\n<p class=\"lw-lead\">A grinder is the upstream guard for the rest of the headworks. The four units below are the next stop after maceration in a typical Loway-installed line.<\/p>\n<div class=\"lw-tsc-related\">\n      <a class=\"lw-tsc-rel\" href=\"\/de\/rotary-drum-filter\/\"><\/p>\n<h3>Rotary Drum Filter<\/h3>\n<p>Fine solids capture after coarse screening. Common pairing for FOG-rich streams.<\/p>\n<p>        <span class=\"arr\">View product<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-rel\" href=\"\/de\/filter-presses\/\"><\/p>\n<h3>Filter Presses<\/h3>\n<p>Chamber, membrane, plate &amp; frame and mobile units \u2014 used downstream for sludge dewatering.<\/p>\n<p>        <span class=\"arr\">View Filter Presses<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-rel\" href=\"\/de\/rotary-drum-screen\/\"><\/p>\n<h3>Rotary Drum Screen<\/h3>\n<p>Fine screening to 0.5 mm \u2014 paired with the grinder on municipal headworks lines.<\/p>\n<p>        <span class=\"arr\">View product<\/span><br \/>\n      <\/a><br \/>\n      <a class=\"lw-tsc-rel\" href=\"\/de\/dewatering-screw-press\/\"><\/p>\n<h3>Dewatering Screw Press<\/h3>\n<p>Pre-dewatering step for screened sludge before the filter press or dryer.<\/p>\n<p>        <span class=\"arr\">View Screw Press<\/span><br \/>\n      <\/a>\n    <\/div>\n<\/p><\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Inline Solids Reduction for Pump Stations &amp; Sludge Lines Twin-Shaft Channel Grinders &amp; Sewage Macerators High-torque dual-shaft grinders for pump protection, FOG capture, and rag shredding in municipal and industrial headworks. SS304 or SS316 cutters, IP55 or IP68 drive \u2014 sized to the solids you actually handle, not a catalog curve. Request Specification Sheet Start [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3216","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Twin-Shaft Channel Grinders &amp; Sewage Macerators | Loway<\/title>\n<meta name=\"description\" content=\"Twin-shaft channel grinders and sewage macerators for pump protection and rag shredding. 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