S Type, C Type Steel Roller Chains

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S and C Type Steel Agricultural Roller Chains Manufacturer - Harvester, Baler and Forage Chain with Attachments

A steel agricultural chain spends its life in dust, in damp crop and in the sun, on a machine that has a narrow window to get the harvest in. The S type and C / CA type chains on this page are the standard steel roller chains and attachment sets for that work: harvesters, balers, forage and root equipment, and the conveyors that feed them. Both the chain and the attachment that bolts it to the machine are listed here, because on agricultural equipment it is usually the attachment, not the pitch, that decides whether a replacement will fit. Pitch runs from 29.21 mm on the S32 chains up to 66.27 mm on the S88 range.

S type and C / CA type steel agricultural roller chains, with the attachment specified for every model.

Pitch from 29.21 mm on the S32 chains to 66.27 mm on the S88 range.

Attachment codes F1 to F21 and K1 to K39, plus the A1, A2 and LV41N patterns.

Rubber attachment versions in the G series, for crop that must not be marked or bruised.

Complete replacement chain sets for combine harvesters: C6E, C11E, C13E, C25E and C30E.

Built to ISO and DIN standards, with custom sizes and attachments made from a drawing.

The S type group. Nine pitch families, S32 through S88, from 29.21 mm to 66.27 mm, each listed with the attachment that fits it and with the alternative attachment patterns that can be fitted instead. Chain dimensions and attachment dimensions are given side by side, so a fit can be checked before an order is placed rather than after delivery.

The C and CA type group. The wider and heavier attachment patterns that go on the same machines, including CA550, CA555, CA557, CA620, CA627 and CA2060, plus the 38.4R and 38.4V series. Some groups in this section run to more than thirty models on a single table.

Replacement chain sets for combines. The C6E, C11E, C13E, C25E and C30E patterns are complete assemblies for specific work, listed with pitch, plate and tensile data rather than as attachments.

Rubber attachment versions. Where the crop must not be marked, the G series carries a rubber attachment, and those tables quote the attachment width W, its height H, the attachment F and the rubber thickness Tr.

Special sections and pin joints. The A1 and A2 patterns, the K39M versions, the LV41N patterns and the -D pin-joint chains each carry their own dimension sheet, which is why the tables list them separately instead of folding them into a general range.

Steel throughout, with the duty visible in the table. Plate depth and plate thickness are quoted for every model, so two chains with the same pitch are still distinguishable by what they will carry and how long they will last.

Made to ISO and DIN standards. The range is produced to ISO and DIN standards from selected raw material, with controlled heat treatment, which is what produces the high tensile strength and wear resistance these chains are bought for.

Tensile strength is quoted per model, not per family. The tables give a minimum tensile figure for the patterns that carry load - 57.78 kN on the CA550HF range, for instance - so a replacement can be checked against the original chain rather than estimated from the pitch.

The attachment is specified with the chain. An attachment transfers the load into the machine, so the attachment plate and the chain plate are dimensioned together on the sheet rather than chosen separately.

Surface treatment on request. Where the machine works in wet conditions or with fertiliser, say so and the surface treatment is agreed with the order.

Harvesting and conveying. The S and C type chains drive the conveying and lifting sections of harvesters and the elevators that carry crop away from the header.

Balers and forage equipment. Here the chain controls crop rather than simply moving it, which is why attachment chains are used on the pick-up, feed and tying sections.

Root and speciality crops. The rubber attachment G series is used where the crop has to be handled without marking or bruising.

Field machinery generally. Any implement whose drive has to survive dust, damp and months of seasonal storage, where the chain is judged by how many seasons it lasts rather than by how quietly it runs.

Replacement and retrofit. The -D, C6E, C11E, C13E, C25E and C30E assemblies exist so that a machine can be put back into service with a matched set instead of a made-up one.

We stay on the model, not the order. Once a chain number has been identified for your machine, the same reference is used for the next order, so a repeat is a restatement rather than a fresh investigation.

Identify the part from whatever still exists. A worn chain with a legible number, the machine manual page, or a photograph of the attachment is normally enough to work out what has to be replaced. Where the number has worn away, the attachment dimensions in the tables are what we use to match it.

Changes are settled before production. If an attachment has to be altered to fit, the dimension sheet is agreed first and the approved sheet becomes the reference for the batch.

Small quantities are normal on this range. Attachment chains are often needed in ones and twos during harvest rather than by the pallet, so tell us the quantity you actually need and the offer is built around it.

If a chain fails, tell us how. The wear pattern, the elongation and where the attachment broke are the three things that identify the cause. Send photographs and the chain number and we will come back with what to check on the machine.

Tension is the first thing to get right. These chains run on drives designed for a specific sag: too tight and the pins and bushes are loaded continuously, too loose and the chain climbs the sprocket. Set the sag the way the machine manual specifies rather than by feel.

Align the sprockets before the chain goes on. Misalignment shows up as wear on one side of the plate and as a chain that tries to run off. On equipment stored outdoors, check alignment again after the first day in the field, because that is when a frame settles.

Measure elongation instead of judging by appearance. A chain that looks worn but still measures inside its limit will outlast one that looks clean and has stretched.

Inspect the attachment with the chain. On agricultural machinery the failure is usually the attachment plate, the bolt or the hole, so those are checked at the same time rather than after something breaks.

Store it dry and off the ground. A chain that waits months between seasons corrodes where the pins and bushes sit, and that corrosion is what wears it out in the first week of the next harvest.

What to send when something has failed: the chain number, the machine, the hours run, photographs of the wear pattern, and the measurement taken over a known number of pitches.

Coils or boxes, decided by the length. Short attachment sets and spares normally travel boxed and long runs travel coiled. Tell us which suits your stores and the packing is agreed with the order.

Attachments are the fragile part. An attachment plate will bend if the load of a package passes through it, so packing is arranged so that it does not.

Protection for a season in store. Many agricultural orders are bought before the season and used weeks later. Say whether you want additional rust-preventive protection and it is priced with the order.

Marked so the field can identify it. Model number, quantity and length go on each package and onto the packing list.

Freight and Incoterm. Name the Incoterm and the discharge port with your enquiry and the carriage is quoted into the price. Loading against your own forwarder is also straightforward.

Mixed orders. Several patterns nearly always ship together on this range, so tell us at the quotation stage and the packing is planned around the mix.

What is the difference between S type and C / CA type agricultural chain?
S type covers the standard steel agricultural chains, from 29.21 mm to 66.27 mm pitch, with the K1 and K2 attachments and the F1 to F21 patterns. C and CA type covers the wider and heavier attachment patterns, CA550, CA555, CA557, CA620, CA627 and CA2060, together with the 38.4R and 38.4V series. The two families go on the same machines but rarely share parts.

How do I identify the chain on my machine?
Start with the number stamped on the plate, or with the machine manual page. If the number has gone, measure the pitch, the width between the inner plates, and the attachment dimensions, then compare them with the tables. The attachment dimensions are what separate two chains of the same pitch.

What do the F and K codes mean?
They are attachment patterns, not sizes. This page lists F1 to F21 and K1 to K39, and a chain carrying a different F or K number will not fit the same machine even at the same pitch.

Can the attachment be supplied on its own?
Yes. Attachments are usually the first part to fail and they can be ordered separately while the chain is still serviceable. Send the chain number and the attachment code read off the old plate.

Do you make non-standard attachments?
Yes. Custom sizes, surface treatments and different S and C attachments are part of this range, and a drawing or a worn sample is enough to work from. The dimension sheet is agreed before production.

What is the pitch range on this page?
From 29.21 mm on the S32 chains to 66.27 mm on the S88 range.

Are rubber attachment versions available?
Yes. The G series carries a rubber attachment, and those tables quote the attachment width, the attachment height, the attachment F and the rubber thickness Tr so the pattern can be matched.

What should I check if a chain keeps failing?
Four things, in order: tension and sag, sprocket alignment, elongation measured over a fixed number of pitches, and the condition of the attachment plate and its fixing. Send the chain number, the hours run and photographs of the wear pattern and we will tell you which of the four is doing the damage.

An agricultural chain is matched to a machine, not chosen from a list. Send us the chain number, the manual page, a drawing or the worn parts, and what comes back is the model, the attachment code and the dimension sheet, for you to approve before the batch is run.

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