1. Line-up and features

ST Series	RT Series
The height of the special attachments and upper face of the plastic rollers is the same, allowing for smooth transfer of items from one direction to another on chains installed in parallel. Roller coefficient of friction for plastic rollers: 0.06 - 0.10	Plastic rollers are twice as wide as ST Series (excluding RT300 Series), making the chain perfect for conveying pallets and cases. Roller coefficient of friction for plastic rollers: 0.06 - 0.10
SS Series Plastic rollers: Polyacetal (light gray) Stay pins: SUS304 Special attachments: SUS304 Clips: SUS301 Base chain: Stainless steel Dimensions/Specs NP Series Plastic rollers: Polyacetal (light gray) Stay pins: SUS304 Special attachments: SUS304 Clips: SUS301 Base chain: Nickel plated steel Dimensions/Specs	SS Series Plastic rollers: Polyacetal (light gray) Stay pins: SUS304 Special attachments: SUS304 Base chain: Stainless steel Dimensions/Specs

• ST300/RT300 Series are bushed chains with no rollers.
• Made-to-order product

2. Structure

The RT Series is the same as the ST Series without the special attachments.

ST Series Structural Drawing

There are no rollers on ST3** and RT3** chains.

3. Model Numbering Example

ST Series

1. (1) Model: ST3**, ST4**, ST5**
2. (2) Specifications: SS = Stainless steel, NP = Nickel plated

RT Series

1. (1) Model: RT3**, RT4**, RT5**, RT6**
2. (2) Specifications: SS = Stainless steel

4. Sprockets

RS sprockets (B-type) can be used if they have 23 or more teeth. The boss on sprockets with 22 or fewer teeth will contact the chain plates. In this situation, use a sprocket for plastic roller tables. (The inner and outer links on the RT600 Series have the same height.)