Isometric illustration of a wastewater treatment plant — clarifiers, basins and equipment
Manufacturer · 100% of chains proof-loaded before shipment

Wastewater treatment components built to run for decades

We design and manufacture in Poland: non-metallic and stainless steel chains, sprockets, flights, bearings and wear parts for clarifiers. 1:1 interchangeable with 720 and 78 series — retrofit without rebuilding your system.

100%
of chains proof-loaded before shipment
30+ yrs
component service life in real installations
4M ft
of chain in operation at treatment plants
0
lubrication for the entire service life

About TERSON

We are a manufacturer, not a distributor. We design, produce and test components in our own plant — so we personally stand behind their reliability.

We specialise in advanced solutions for wastewater treatment plants: high-performance chains, sprockets, gear racks, scraper flights and complete system components. Every product is designed to operate in the toughest environments — where corrosion, load and continuous operation are part of everyday reality.

Most of our products are made in our own plant in Poland, where we control every stage ourselves — from raw material to final testing. 100% of chains — every one, not a random sample — pass a proof-load test before shipment. That is how we maintain full quality control and short lead times.

We customise every detail to match your application, environment and expectations. A warehouse located in Europe ensures fast availability and an immediate response to urgent needs.

Manufacturing
in Poland
Warehouse
in Europe
Reach
worldwide
Partners
Japan Chain Holdings
Diagram of a typical rectangular clarifier with TERSON components
Typical rectangular clarifier (four-shaft system) — layout of TERSON components

Our products

A complete range of components for rectangular clarifiers, bar screens and grit collectors — from chain and drive to wear parts.

In-house quality control · 100% of chains proof-loaded before shipment

Chains

NM720S — Non-Metallic Chain

6″ (152.4 mm) pitch collector chain in glass-reinforced nylon — a 1:1 replacement for cast iron 720 series. No corrosion, no lubrication, a fraction of the weight.

  • Every chain proof-loaded before shipment
  • Acetal link — reinforced nylon pin
  • Positive Locking Pin
  • High strength, UV resistant
  • Works with F-226 / F-228 attachments

NH78 — Non-Metallic Drive Chain

Lightweight alternative to metallic and cast 78-series drive chains. Glass-reinforced nylon, no lubrication, 316SS pin.

  • Every chain proof-loaded before shipment
  • Interchangeable with 78 series
  • No lubrication required
  • 316SS pin — no cotters or clips
  • UV inhibitors

SAV715 — Stainless Steel Chain

403 stainless collector chain — a higher strength-to-weight ratio than cast iron, without its brittleness and corrosion. Over 4 million feet in service.

  • Every chain proof-loaded before shipment
  • 403 stainless steel
  • Lightweight, strong
  • For bar screen & grit collectors
  • Service life measured in decades

SAV709 — Stainless Steel Chain

Economical 403 stainless chain — a direct interchange for cast iron and non-metallic 720 chains, without cast iron corrosion.

  • Every chain proof-loaded before shipment
  • 403 stainless steel
  • Ultimate strength 84.5 kN (19,000 lbs)
  • 720-series interchange — no rebuild
  • “J” cotter assembly — easy service

HB78 — Stainless Steel Drive Chain

403 stainless pintle drive chain — for where carbon steel and cast iron corrode. Runs on cast, non-metallic or stainless 78-style sprockets.

  • Every chain proof-loaded before shipment
  • Interchangeable with all 78 series
  • Minimal elongation
  • J-cotter — easy link service
  • Food-grade lube option

Sprockets & Drives

HMAX Sprockets — Integrally Molded

720-style sprockets in a three-piece, integrally molded design. Teeth of extreme wear resistance, split polyurethane hub.

  • UHMW tooth profile
  • Split polyurethane hub
  • Glass-reinforced nylon bore
  • 23 / 19 / 17 tooth configurations

Non-Metallic Shearpin Sprocket

Non-metallic sprocket with urethane hub and Nylon 6 teeth, with a shear-pin assembly protecting the drive from overload.

  • Urethane hub, Nylon 6 teeth
  • Trip pin — trip signalling
  • Optional limit switch / alarm
  • Bores 20–80 mm

Jaw Clutch / Shearpin Assembly

Heavy-duty jaw clutch / shear-pin assembly with cast nylon bodies and shear protection. Omni-directional hub for smooth drive engagement.

  • Cast nylon bodies
  • No lubrication, no zerk fittings
  • For 10- and 11-tooth sprockets
  • Trip arm + optional limit switch

Flights

Aluminum Flights

Flights in 6063 T-5 aluminium — an economical alternative to FRP and wood. Patented no-drill attachment, corrosion resistant.

  • 8″ and 6″ sizes (incl. heavy duty)
  • Optional neoprene wiper
  • No-drill mounting
  • Recyclable

Fiberglass Flights

FRP flights in SIGMA and DIAMOND profiles — corrosion- and chemical-resistant, up to 75% lighter than steel, large stiff cross-section.

  • SIGMA and DIAMOND profiles
  • Chemical-resistant, non-conductive
  • UV inhibitors
  • For F-226 / F-228 attachments

Bearings & Shafts

Cast Nylon Stub Shafts

Lightweight cast nylon shafts replacing heavy steel shafts. Reduce system drag, no lubrication, over 30 years of service.

  • Reduces system drag
  • No grease lines
  • With HMAX static sleeve bearing
  • 24″ / 18″ / 12″ projections

HMAX Sleeve Bearings

Static sleeve bearings (Standard and Wide Profile / Clamping Band) for quick, low-cost shaft bearing replacement. Reduce chain drag.

  • Quick tool-free replacement
  • Standard and Wide Profile
  • Clamping bands (Wide Profile)
  • Lower drag on the chain

HMAX Non-Metallic Wall Bearings

Wall bearings that do not corrode — unlike metallic ones where oxidation freezes the shaft. Nylon shaft sleeve, no lubrication.

  • Cast nylon housing
  • Replaceable nylon shaft sleeve
  • Standard mounting bolt pattern
  • No lubrication required

Wear Components

Standard UHMW Wear Shoes

Molded UHMW-PE Black Repro wear shoes (~5 million g/mol molecular weight) — excellent durability and wear resistance at a far lower price than virgin UHMW.

  • Floor / return / lug styles
  • 13 mm thick
  • High wear resistance
  • Economical (Black Repro)

Wear Alert UHMW-PE Wear Shoes

Wear shoes with a built-in visual wear indicator — a colour appears once 50% of thickness is worn, removing the guesswork on replacement.

  • Visual wear indicator (50%)
  • ~5 million g/mol molecular weight
  • Floor and return styles
  • Fewer sudden shoe failures

UHMW-PE Wearstrip

HMAX UHMW-PE wearstrips (~5 million g/mol molecular weight), UV inhibited. Slotted holes allow thermal expansion; mitered ends give smooth transitions.

  • 50 / 67 / 76 mm widths
  • 10 / 13 / 19 mm thickness
  • 3048 mm lengths
  • Slotted holes for thermal expansion

Other & Custom

Fiberglass Scum Pipe

Fiberglass scum pipe for removing surface scum, oils and grease. A replacement for cast iron and steel pipes — no seizing.

  • Non-corrosive (FRP)
  • Easier operation than steel
  • No bearing seizing
  • For rectangular & circular tanks

Built to Your Specifications

Roller chains, spur gears, gear racks and sprockets manufactured to your exact specification — built to your specifications.

  • Roller chains
  • Spur gears
  • Gear racks
  • Sprockets

Not sure about your chain designation? Send a photo or link dimensions — we'll match a replacement.

100%
proof-load test

In-house quality — built into production

100% of chains pass a proof-load test before shipment

Not a random sample — every single chain. All quality control happens in our own plant in Poland: from incoming raw material, through production, to the final proof-load test. You install a component with verified strength, not a catalogue claim.

  1. 1 Material

    Incoming material inspection — full batch traceability

  2. 2 Production

    Manufacturing and measurement in-house, no subcontractors

  3. 3 Proof-load

    Load test of 100% of chains before packing and shipment

Applications

Our components work where reliability, corrosion resistance and years of trouble-free service matter most.

Rectangular clarifiers

Chain & flights, drive and idler sprockets, wearstrips

Bar screens

Collector and drive chains, sprockets

Grit collectors

Abrasion-resistant collector systems

Scum removal

FRP scum pipes for oils and grease

TERSON sprockets, racks and chains built to order

Materials & technologies

Glass-reinforced nylon 403 stainless steel UHMW-PE Cast nylon Aluminium 6063 T-5 Fiberglass (FRP) Urethane 316SS pins

Why TERSON?

We are a manufacturer, not a middleman. We design, produce and test every component ourselves — so we stand behind quality from raw material to shipment.

100% of chains tested before shipment

Every chain passes a proof-load test before it leaves our plant. You receive a component with verified strength — not a catalogue claim.

In-house quality control

We manufacture and test components in our own plant in Poland — from material selection to final testing. No subcontractors, full batch traceability.

Maintenance-free

Non-metallic components need no lubrication and do not corrode — fewer shutdowns and inspections.

Decades of service

Over 30 years of life and 4 million feet of chain in operation — proven in real installations.

Full interchangeability

Direct replacements for 720 and 78 series — retrofit without rebuilding your existing system.

Lighter construction

Up to 75% lighter than steel. Lower system drag and reduced load on the drive.

Corrosion & UV resistant

Materials resistant to chemicals, moisture and sunlight — ideal for the wastewater environment.

Built to specification

Sprockets, gear racks and components engineered to each customer's exact requirements.

Upgrading a clarifier?

We'll match components 1:1 to your system and prepare a free quote within 24 hours.

Request a quote

Our partners

We work with global leaders in the industrial chain industry from the Japan Chain Holdings group — combining proven Japanese and American engineering with European responsiveness.

ZEXUS Chain — partner logo

ZEXUS Chain

Japan

Japanese industrial chain manufacturer with over 100 years of history and a top market share in chains for water purification and sewage treatment. Part of the Mitsui Matsushima group.

Sugiyama Chain — partner logo

Sugiyama Chain

Japan

Japanese manufacturer of specialised industrial chains and a Japan Chain Holdings partner — high-durability components for water treatment systems.

MAXCO Chain — partner logo

MAXCO Chain

USA

American manufacturer of roller, engineering-class and environmental chains — a full line of components for the wastewater treatment industry. Headquartered in Marietta, Georgia, USA.

Get a quote and component selection within 24 hours

Tell us what clarifier you run or which component you need — we'll figure out the rest. The quote is free and non-binding.

We reply within 24 hours on business days. The enquiry is free and non-binding, and your data will be used solely to prepare our reply.

Terson Sp. z o.o.

Powering your business

ul. Świeradowska 51-57, 50-559 Wrocław, Poland
Office & warehouse: ul. Topolowa 45, 55-114 Szewce, Poland

Why it's worth asking

  • 100% of chains proof-loaded before shipment
  • In-house quality control — we are the manufacturer
  • Warehouse in Europe — fast delivery
  • Free quote — no obligations