Small size conveyor chain

Small size conveyor chains are roller chains or double pitch chains with added attachments for small conveying applications.
Attachments are available in a wide range of variations and can be fitted with further slats, bars and special jigs to convey any shape of material.
Engagement drive makes it no slippage and has a wide operating range to conveyor length, conveying direction and ambient conditions.

Features and Points of Caution regarding Chain Conveyors

  • ・Can convey items of almost any shape.
  • ・A wide array of options available in terms of conveyor length, direction of conveyance, and ambient conditions.
  • ・No slippage, allowing for accurate conveyance.
  • ・Extremely durable and highly efficient.

【Points of Caution 】

  • *While one positive point for chain conveyors is that there is no slippage, care needs to be taken during selection in applications with impacts.
  • *Since it is a engagement mechanism between the chain and the sprocket, there is a speed fluctuation due to its characteristics.

Small Size Conveyor Chain Types and Structure

Double Pitch Chains

  • ・Has double the pitch of RS Attachment Chain with a flat plate contour.
  • ・Can use R or S rollers, allowing for use in various applications.
  • ・Double Pitch type sprocket or RS sprocket (when the number of teeth is 30 or more with S roller) can be used.
  • ・Suitable for relatively long distance and low speed conveyance.
Double Pitch chain structure diagram
[Click to enlarge ]

RS Attachment Chains

  • ・This chain has an attachment attached to RS Roller Chain (for drive).
  • ・Since the chain pitch is small, small articles can be conveyed at a small pitch, which is generally suitable for short distance conveyance.
  • ・High-speed, smooth, and quiet operation is possible.
  • ・In most cases, RS sprockets can be used.
Attachment chain structure diagram
[Click to enlarge ]

See more about components and their roles

1.Plate 2.Pin
Parts photo The plate bears the tension placed on the chain. Because the accuracy of the holes into which pins or bushes are press fitted affects chain quality, plates are manufactured with particular precision and finished into tough plates with high fatigue strength and impact resistance. Parts photo The two ends of the pin are press fitted to holes in the outer plates and riveted in place. (For Hollow Pin Chain and Poly Steel Chain, they are press fitted only.) Because the pins are subject to shearing and bending forces via the plates, and because the bushes rotate and slide along the pins as the chain articulates, they are manufactured with an emphasis on strength and wear resistance.
3.Bush 4.Roller
Parts photo The two ends of the bushes are press fitted to the inner plate and function as bearings for the pins and rollers. They are subject to complex forces through the various parts, and are finished to specifications having high wear resistance. Parts photo Rollers are slip fit onto the bushes and reduce mechanical shock when the chain engages the sprocket. In addition, they serve to reduce running resistance by turning when the chain is in motion, making the chain run smoothly. Wear resistance is important.
5.Attachments 6.Spring Clip/Cotter Pin
Parts photo Bolt holes are drilled for attachments. For details, see page of Standard Attachments. Parts photo Spring clips and cotter pins prevent the connecting plates from detaching and are important components to maintain the intrinsic strength of the chain. Always install these parts.
7.Inner link 8.Outer link
Parts photo The ends of the two bushes are press fitted to the inner plate to form the inner link. Rollers are slip fit over the outside of the bushes. Parts photo The ends of the two pins are press fitted to the outer plates. The ends of the pins other than those on connecting links are riveted in place to prevent detachment. (For Hollow Pin Chain and Poly Steel Chain, they are press fitted only.)
Three basic dimensions Slip fit Press fit
The pitch, roller diameter, and inner width of the inner link are referred to as the three basic dimensions of roller chain. When these dimensions are identical, a roller chain and sprocket are dimensionally compatible. This will always fit with a clearance when the shafts and holes are fitted together. The hole tolerance range is larger than that of the shaft (pin or bush). With this type of fit there is continuous interference when the shafts and holes are fitted together. The hole tolerance range is completely under the shaft (pin or bush) tolerance range.

See more about standard attachment types

Attachment Types

A attachments

A attachments

This attachment has holes and is attached on one side of the chain.
A1:1 hole  A2:2 holes (※Only one hole available for RS Chain. )

[Photo :A1 attachments spaced every link ]

SA attachments

SA attachments

This vertical attachment has holes and is attached on one side of the chain.
SA1:1 hole  SA2:2 holes (※Only one hole available for RS Chain. )

[Photo :SA2 attachments spaced every link ]

K attachments

K attachments

This attachment has holes and is attached on both sides of the chain.
K1:1 hole  K2:2 holes (※Only one hole available for RS Chain. )

[Photo :K1 attachments spaced every link ]

SK attachments

SK attachments

This vertical attachment has holes and is attached on both sides of the chain.
SK1:1 hole  SK2:2 holes (※Only one hole available for RS Chain. )

[Photo :SK2 attachments spaced every link ]

AA attachments

AA attachments

This attachment has holes on both the top and bottom of the chain, and is attached on one side.
AA1:1 hole  AA2:2 holes (※Only one hole available for RS Chain. )

[Photo :AA1 attachments spaced every link ]

WA attachments

WA attachments

This wide attachment has holes and is attached on one side of the chain.
WA1:1 hole  WA2:2 holes

[Photo :WA1 attachments spaced every other link ]

KK attachments

KK attachments

This attachment has holes on both the top and bottom of the chain, and is attached on both sides.
KK1:1 hole  KK2:2 holes (※Only one hole available for RS Chain. )

[Photo :KK1 attachments spaced every link ]

WK Attachments

WK Attachments

This wide attachment has holes and is attached on both sides of the chain.
WK1: 1 hole  WK2:2 holes

[Photo :WK1 attachments spaced every other link ]

EP attachments

EP attachments

One end of the pins is extended on one side of the chain.

[Photo :EP attachments spaced every link ]

GNK attachments

GNK attachments

Chain with holes in the plates on both sides. (Available only for S rollers on Double Pitch Chains.)

[Photo :GNK1 attachments spaced every link ]

Note )WA, WK:WA and WK attachments cannot be attached to every link of RS Chain.

Formation

While attachments can be spaced more than every link, when attaching to an even number of links we will attach them to outer links where maintenance is easier.

Special Attachment Chain

Tsubaki offers a complete line-up of attachments to match any need.

Small Size Conveyor Chain Product Line-up

You can choose the most suitable chain from our extensive lineup depending on the atmosphere of use.

Small size conveyor chain that can be used in various environments.

Stainless steel chain with attachment that can be used in a corrosive atmosphere, Coating chain with attachment that has enhanced corrosion resistant by applying surface treatment, Double pitch chain with plastic roller basic model/high-temperature/chemical-resistant/food machine compatible/low-noise type that uses engineering plastic rollers and enables use without lubrication between bushes and rollers, and Poly steel chain with attachments that are lubrication-free and long-life/low-noise, are available.

Stainless Steel Attachment Chain

Stainless Double Pitch Chains  SS Series

Model No.  RF2□□□S/R-SS~

View product details

A standard corrosion resistant Double Pitch Chain using an18-8SUS(SUS304 equivalent) stainless steel.

  • ・Uses 18-8SUS(SUS304 equivalent) stainless steel for the base chain. This is a standard corrosion resistant stainless steel chain.
  • ・For use in water, acids, alkalis, low/high temperatures (-20ºC to 400ºC), and other special environments.
  • ・Parts are slightly magnetic from the cold forming process.
  • ・This chain will corrode depending on the type and concentration of chemical it is in contact with. Consider the NS Series if greater corrosion resistance is required.
Size

RF2040~RF2160

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Stainless Double Pitch Chains  HS Series

Model No.  RF2□□□S/R-HS~

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Double pitch chain using an 13Cr stainless steel for pins, bushs and rollers (18-8SUS stainless steel for R-roller).

  • ・Longer life than SS series. (In-house test results )
  • ・1.8x the maximum allowable load of SS Series.
  • ・Slightly less corrosion resistance than the SS Series.
  • ・Operating Temperature Range :-20℃~150℃
Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Stainless Double Pitch Chains  AS Series

Model No.  RF2□□□S/R-AS~

View product details

Please consider replacing with SS series.
Click here for details

  • ・Corrosion resistance is slightly less than that of SS chains.
  • ・Suitable for applications that require corrosion resistance and heat resistance (–20℃ to400℃) and smaller sizes and/or higher load capacity than SS chains
  • ・Chain is magnetic.
Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Stainless Double Pitch Chains  NS Series

Model No.  RF2□□□S/R-NS~

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Uses 18-12SUS(SUS316 equivalent) stainless steel for increased corrosion resistance.

  • ・Used for applications that require higher corrosion resistance than SS chains.
  • ・For use in water, acids, alkalis, low/high temperatures (-20ºC to 400ºC), and other special environments.
  • ・All connecting links use cotter pins, regardless of chain size.
Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Stainless Double Pitch Chains  LSK Series

Model No.  RF2□□□S/R-LSK~

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A stainless steel conveyor chain with a special bush.

  • ・Ideal for when a longer-life stainless steel chain is needed.
    Has 4 times the wear life of SS chain at ambient temperatures and 3 times the wear life of SS chain at 180℃. (in-house testing conditions )
  • ・Operating temperature range: –20℃ to 180℃
  • ・Less initial elongation than SS chain reduces the need for maintenance.
  • ・Parts are slightly magnetic from the cold forming process.
  • ・18-8SUS(SUS304 equivalent) Bushes are a combination of 18-8SUS(SUS304 equivalent) stainless steel and special engineering plastic.
Size

RF2040~RF2060

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

View product details

A standard corrosion resistant RS Attachment Chain using an 18-8SUS(SUS304 equivalent) stainless steel.

  • ・Uses 18-8SUS(SUS304 equivalent) stainless steel for the base chain. This is a standard corrosion resistant stainless steel chain.
  • ・For use in water, acids, alkalis, low/high temperatures (-20ºC to 400ºC), and other special environments.
  • ・Parts are slightly magnetic from the cold forming process.
  • ・This chain will corrode depending on the type and concentration of chemical it is in contact with. Consider the NS Series if greater corrosion resistance is required.
Size

RS25~RS160

Attachment Types

A1, K1, SA1, SK1, EP

View product details

RS attachment chain using an 13Cr stainless steel for pins, bushs and rollers.

  • ・Longer life than SS series. (In-house test results )
  • ・1.8x the maximum allowable load of SS Series.
  • ・Slightly less corrosion resistance than the SS Series.
  • ・Operating Temperature Range :-20℃~150℃
Size

RS40~RS80

Attachment Types

A1, K1, SA1, SK1, EP

View product details

Please consider replacing with SS series.
Click here for details

  • ・Corrosion resistance is slightly less than that of SS chains.
  • ・Suitable for applications that require corrosion resistance and heat resistance (–20℃ to400℃) and smaller sizes and/or higher load capacity than SS chains
  • ・Chain is magnetic.
Size

RS40~RS80

Attachment Types

A1, K1, SA1, SK1, EP

View product details

Uses 18-12SUS(SUS316 equivalent) stainless steel for increased corrosion resistance.

  • ・Used for applications that require higher corrosion resistance than SS chains.
  • ・For use in water, acids, alkalis, low/high temperatures (-20ºC to 400ºC), and other special environments.
  • ・All connecting links use cotter pins, regardless of chain size. Contact a Tsubaki representative if spring clips are needed.
Size

RS25~RS80

Attachment Types

A1, K1, SA1, SK1, EP

Stainless RS Attachment Chains  LSK Series

Model No.  RS□□-LSK~

View product details

A stainless steel conveyor chain with a special bush.

  • ・Ideal for when a longer-life stainless steel chain is needed.
    Has 4 times the wear life of SS chain at ambient temperatures and 3 times the wear life of SS chain at 180℃. (in-house testing conditions )
  • ・Operating temperature range: –20℃ to 180℃
  • ・Less initial elongation than SS chain reduces the need for maintenance.
  • ・Parts are slightly magnetic from the cold forming process.
  • ・18-8SUS(SUS304 equivalent) Bushes are a combination of 18-8SUS(SUS304 equivalent) stainless steel and special engineering plastic.
Size

RS40~RS60

Attachment Types

A1, K1, SA1, SK1, EP

Surface-Treated Attachment Chain

This chain has improved corrosion resistance by applying surface treatment to standard small size conveyor chains. Double Pitch and RS Attachment Chains are available.
Our line-up includes NP Series, which has been nickel plated for light corrosion resistance and an attractive appearance, and NEP Series, which features a special surface treatment and top coat for superior endurance.

Coating Double Pitch Chains  NP Series

Model No.  RF2□□□S/R-NP~

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Double Pitch Chain that has been nickel-plated for an attractive appearance and light corrosion resistance.

  • ・Nickel plated for light corrosion resistance and an attractive appearance.
  • ・It also complies with the RoHS directive. Can be used in light contact with water.
  • ・Operating Temperature Range :-10℃~150℃
  • ・Nickel plating on steel (all components heat-treated steel)
Size

RF2040~RF2160

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Coating Double Pitch Chains  NEP Series

Model No.  RF2□□□S/R-NEP~

With a special surface treatment and top coat.

  • ・Double Pitch Chain with a special coating and top coating.
  • ・They have the strength of Double Pitch Chain and offer superb saltwater, weather, and chemical resistance.
  • ・With no harmful chromium. RoHS compliant
  • ・Operating temperature :-10℃~60℃
  • ・Avoid using in conjunction with stainless steel sprockets at all possible costs.

※Notes for use :Contact a Tsubaki representative if using in a high-temperature steam environment.

Size

RF2040~RF2100

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Coating RS Attachment Chains  NP Series

Model No.  RS□□-NP~

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RS Chain with attachment is nickel-plated, giving it an attractive appearance and light corrosion resistance.

  • ・Nickel plated for light corrosion resistance and an attractive appearance.
  • ・It also complies with the RoHS directive. Can be used in light contact with water.
  • ・Operating Temperature Range :-10℃~150℃
  • ・Nickel plating on steel (all components heat-treated steel)
Size

RS25~RS160

Attachment Types

A1, K1, SA1, SK1, EP

Coating RS Attachment Chains  NEP Series

Model No.  RS□□-NEP~

With a special surface treatment and top coat.

  • ・RS Attachment Chain with a special coating and top coating.
  • ・They have the strength of RS Attachment Chain and offer superb saltwater, weather, and chemical resistance.
  • ・With no harmful chromium. RoHS compliant
  • ・Operating temperature :-10℃~60℃
  • ・Avoid using in conjunction with stainless steel sprockets at all possible costs.

※Notes for use :Contact a Tsubaki representative if using in a high-temperature steam environment.

Size

RS40~RS100

Attachment Types

A1, K1, SA1, SK1

Double Pitch Chain with Plastic Rollers  Basic model

Uses engineering plastic rollers -- can operate without additional lubrication between bushes and rollers.
We offer a complete line-up of these lightweight, quiet chains.

View product details

This chain combines engineering plastic rollers (polyacetal) with (hardened) steel parts.

  • ・Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance: 30% less running resistance than with steel rollers.
  • ・Quiet: 5 - 7dB quieter than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -10ºC to 80ºC.

※Engineering plastic rollers are white.

Size

RF2040~RF2100

Attachment Types

A1, A2, K1, K2 , SA1, SA2, SK1, SK2, EP, GNK1

View product details

All parts of NP series except for the roller are nickel plated.

  • ・All parts except for the roller are nickel plated for an attractive finish and light corrosion resistance.
  • ・Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance: 30% less running resistance than with steel rollers.
  • ・Quiet: 5 - 7dB quieter than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -10ºC to 80ºC.

※Engineering plastic rollers are white.

Size

RF2040~RF2100

Attachment Types

A1, A2, K1, K2 , SA1, SA2, SK1, SK2, EP, GNK1

View product details

All parts except for the roller use an 18-8SUS(SUS304 equivalent) stainless steel.

  • ・All parts except for the roller use an 18-8SUS(SUS304 equivalent) stainless steel for corrosion resistance.
  • ・Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance: 30% less running resistance than with steel rollers.
  • ・Quiet: 5 - 7dB quieter than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -20ºC to 80ºC.

※Engineering plastic rollers are white.

Size

RF2040~RF2100

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Double Pitch Chain with Plastic Rollers  High temperature / chemical resistant / food machine compatible type

Double Pitch Chain with Plastic Rollers  KV Series

Model No.  RF2□□□RPKV-SS~

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Lightweight, quiet, and can withstand high temperature (180ºC) use in contact with a variety of chemicals.

  • ・Realizes lightweight, quiet operation with less running resistance. (In-house test comparison with steel rollers. )
  • ・Resistant to high temperatures :Can withstand continuous operation up to 180ºC. (Operating Temperature Range -20℃~180℃)
  • ・High flame resistance :Conforms to UL V-O class certifications (highest flame resistance)
  • ・Offers superior corrosion resistance to various chemicals than conventional plastic rollers.
  • ・Conforms to the Japanese Food Sanitation Act.

※The base chain is only available in stainless steel.

Size

RF2040~RF2060

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Double Pitch Chain with Plastic Rollers  LSK Series

Model No.  RF2□□□RPKV-LSK~

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In addition to being able to be used in high temperature environments (180 ℃) and chemical resistant environments, it has a long life.

  • ・Uses a special wear resistant bush that provides long wear life with less initial elongation.
  • ・Realizes lightweight, quiet operation with less running resistance. (In-house test comparison with steel rollers. )
  • ・Resistant to high temperatures :Can withstand continuous operation up to 180ºC. (Operating Temperature Range :-20℃~180℃)
  • ・High flame resistance :Conforms to UL V-O class certifications (highest flame resistance)
  • ・Offers superior corrosion resistance to various chemicals than conventional plastic rollers.
  • ・Conforms to the Japanese Food Sanitation Act.
Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

Plastic roller Double Pitch Chains Low noise type

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Special engineering plastic rollers make it (-7dB) quieter than with conventional engineering plastic rollers.

  • ・Uses special engineering plastic rollers that make the chain 7dB quieter than with conventional plastic rollers.
  • ・Lightweight :Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance :Less running resistance: 30% less running resistance than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -10ºC to 80ºC.

※Engineering plastic rollers are a very light cream color.

Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

View product details

All parts except for the plastic rollers are nickel plated for light corrosion resistance.

  • ・Uses special engineering plastic rollers that make the chain 7dB quieter than with conventional plastic rollers.
  • ・Light corrosion resistance :All parts except for the roller are nickel plated for light corrosion resistance.
  • ・Lightweight :Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance :Less running resistance: 30% less running resistance than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -10ºC to 80ºC.

※Engineering plastic rollers are a very light cream color.

Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

View product details

Uses 18-8SUS(SUS304 equivalent) stainless steel for all parts except for the plastic rollers for corrosion resistance.

  • ・Uses special engineering plastic rollers that make the chain 7dB quieter than with conventional plastic rollers.
  • ・Corrosion resistance :Uses 18-8SUS(SUS304 equivalent) stainless steel for all parts except the plastic rollers for corrosion resistance.
  • ・Lightweight :Lightweight: 30% lighter than with steel rollers.
  • ・Less running resistance :Less running resistance: 30% less running resistance than with steel rollers.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -20ºC to 80ºC.

※Engineering plastic rollers are a very light cream color.

Size

RF2040~RF2080

Attachment Types

A1, A2, K1, K2, SA1, SA2, SK1, SK2, EP, GNK1

with attachment Poly Steel Chain Chain

It has superior features such as long life and low noise without lubrication.

Poly Steel Attachment Chains

Model No.  RS□□-PC~

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Using engineering plastic for the inner links (polyacetal) and 18-8SUS(SUS304 equivalent) stainless steel for the outer links.

  • ・Lube-free, corrosion resistant.
  • ・Low Noise :5dB quieter than steel chain.
  • ・Lighter :50% lighter than steel chain.
  • ・Operating Temperature Range :Operating temperature range: Can operate between -20ºC to 80ºC.
  • ・Can be used with standard RS Sprockets.
  • ・BS Series available made-to-order. (Compatible size :RS08B-PC、RS10B-PC、RS12B-PC)
Size

RS25~RS60

Attachment Types

A1, K1, SA1, SK1, EP