Free Flow Short Pitch Conveyor Chain with Top Rollers

Raydafon Free Flow Short Pitch Conveyor Chain with Top Rollers is designed for double speed conveyor systems. The chain runs at a constant speed while the top rollers let the tooling plate travel faster, so conveyed items can be accumulated, accelerated or released without stopping the line. Available in ANSI 40, 50, 60, 80 and 100 series plus C2040, C2050, C2060, C2080 and C2100 double pitch versions. LTR, LTRF1, LTRF2, LTRF3, LTRF4, LTRF6 and LTRF7 attachment variants cover most pallet and fixture layouts. Widely used in home appliance, auto parts and electronics assembly lines. OEM/ODM, wholesale and sample orders supported.

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Product Description

Free Flow Short Pitch Conveyor Chain with Top Rollers — LTR / Double Speed Chain

A short pitch conveyor chain fitted with top rollers, designed for double speed conveyor systems. The chain runs at a constant speed while the top rollers let the tooling plate travel faster — so conveyed items can be accumulated, accelerated or released without stopping the line.

ANSI 40 / 50 / 60 / 80 / 100 series
Double pitch C2040 / C2050 / C2060 / C2080 / C2100
LTR, LTRF1, LTRF2, LTRF3, LTRF4, LTRF6, LTRF7
Pitch 12.700 mm – 63.500 mm
Tensile strength 14.1 kN – 88.5 kN
Anti-static, low noise, stable conveying

Free Flow Short Pitch Conveyor Chain with Top Rollers — LTR double speed conveyor chain

Free flow short pitch conveyor chain with top rollers — LTR / double speed chain

Product Gallery

Product photos and structure views of the free flow short pitch conveyor chain with top rollers. The LTR top roller is mounted on the outer link plate and contacts the tooling plate to create the free flow / double speed effect.

Free flow short pitch conveyor chain with top rollers — product photo

Free flow chain with top rollers — product view

Free flow conveyor chain with LTR top rollers — side view

LTR top roller mounted on outer link plate — side view

Free flow conveyor chain with top rollers — front view

Top roller and base roller layout — front view

Typical product structure of free flow double speed conveyor chain

Typical product structure — double speed chain

Working Principle — How the Top Roller Makes Items Move Faster

The core of a free flow chain is the speed difference between the chain and the conveyed material. The chain itself moves at a constant speed, but because the top roller diameter is larger than the base roller diameter, the tooling plate and the conveyed items move faster. This lets the line accumulate, accelerate or release product without stopping the chain.

Schematic diagram of double speed calculation model for free flow chain — Schematic diagram of the double speed calculation model — chain speed vo, top roller diameter D, base roller diameter d, conveyed item speed v

v = v_o × D / d

v Speed of the tooling plate and conveyed material

v_o Speed of the multiple conveying chains

D Diameter of the top roller

d Diameter of the base roller

Free flow chain speed formula illustration — Speed relationship between the chain and the conveyed material — v = vo × D / d

Constant Chain Speed, Variable Item Speed

The chain runs at a constant vo, but the conveyed items move at v = vo × D / d. Because D > d, the items move faster than the chain — that is the "free flow" effect.

Accumulation Without Stopping the Line

When downstream equipment is busy, items slow down and accumulate on the top rollers while the chain keeps running. This reduces shock loads, wear and line downtime.

Key Features

Free Flow / Double Speed Effect Top rollers let the tooling plate travel faster than the chain following v = vo × D / d.

Anti-Static Suitable for electronic product assembly lines where static discharge must be controlled.

Low Noise Precision rollers and heat-treated components keep running noise low for operator comfort.

Stable and Reliable Conveying Consistent pitch and roller geometry give stable pallet movement in continuous operation.

Multiple Attachment Variants LTR, LTRF1, LTRF2, LTRF3, LTRF4, LTRF6 and LTRF7 cover most pallet and fixture layouts.

Wide Application Coverage Home appliance assembly, auto parts conveying, electronic products manufacturing and other factory automation.

Technical Specifications — ANSI Short Pitch Series (40 / 50 / 60 / 80 / 100)

ANSI short pitch free flow chains with top rollers. P = pitch, d1 = base roller diameter, d3 = top roller diameter, b1 = width between inner plates, d2 = pin diameter, L1–L4 = pin lengths, G / C = attachment dimensions, Q = min tensile strength, q = weight per meter.

Free flow short pitch conveyor chain with top rollers — dimension drawing — Dimension drawing — ANSI short pitch free flow chain with top rollers

ANSI short pitch free flow chains with top rollers — 40 to 100 series
Chain No.	P (mm)	d1 max (mm)	d3 max (mm)	b1 min (mm)	d2 max (mm)	L1 max (mm)	L2 max (mm)	L3 max (mm)	L4 max (mm)	G (mm)	C (mm)	Q min (kN/lbf)	q (kg/m)
40-1-1LTR	12.700	7.95	11.00	7.85	3.96	13.50	16.60	17.80	18.80	9.5	12.7	14.1 / 3250	1.44
50-1-1LTR	15.875	10.16	15.00	9.40	5.08	16.50	20.70	22.20	23.30	12.7	15.9	22.2 / 4991	2.30
50-1LTRF1	15.875	19.05	19.05	9.40	5.08	16.50	20.70	22.20	—	12.7	15.9	22.2 / 4991	1.96
50-1LTRF2	15.875	10.16	18.00	9.40	5.08	16.50	20.70	22.20	—	12.7	15.9	22.2 / 4991	1.90
50-1LTRF4	15.875	10.16	19.00	9.40	5.08	—	20.70	22.20	23.30	12.7	15.9	22.2 / 4991	2.28
60-1-1LTR	19.050	11.91	18.00	12.57	5.94	21.00	25.90	27.70	28.30	15.9	18.3	31.8 / 7227	3.40
80-1-1LTR	25.400	15.88	24.00	15.75	7.92	26.20	32.70	35.00	36.50	19.1	24.6	56.7 / 12746	5.90
80-1LTRF1	25.400	15.88	25.58	15.75	7.92	26.20	32.70	—	36.50	19.1	24.6	56.7 / 12746	4.42
100-1-1LTR	31.750	19.05	30.00	18.90	9.53	32.30	40.40	44.70	44.70	25.4	31.8	88.5 / 20114	8.90

Note: LTR = standard top roller; LTRF1–LTRF7 = top roller with different attachment configurations. Confirm the correct variant against your pallet or fixture drawing before ordering.

Technical Specifications — Double Pitch Series (C2040 / C2050 / C2060 / C2080 / C2100)

Double pitch free flow chains with top rollers are used where larger pitch and heavier loads are required. The tables below cover the most common C-series chain numbers.

Double pitch free flow conveyor chain with top rollers — dimension drawing — Dimension drawing — double pitch free flow chain with top rollers (C-series)

Double pitch free flow chains with top rollers — C2040 to C2100
Chain No.	P (mm)	d1 max (mm)	d8 max (mm)	b1 min (mm)	d2 max (mm)	L1 max (mm)	L2 max (mm)	L3 max (mm)	L4 max (mm)	C (mm)	d3 (mm)	Q min (kN/lbf)	q (kg/m)
C2040-1LTR	25.40	7.95	15.88	7.85	3.96	13.50	16.6	17.8	18.8	12.7	3.96	14.1 / 3205	1.31
C2040-1LTRF2	25.40	7.95	15.88	7.85	3.96	13.50	16.6	17.8	18.8	15.0	3.96	14.1 / 3205	1.24
C2040-1LTRF3	25.40	7.95	15.88	7.85	3.96	13.50	16.6	17.8	18.8	15.0	3.96	10.0 / 2248	1.12
C2050-1LTR	31.75	10.16	19.05	9.40	5.08	16.50	20.7	22.2	23.3	15.9	5.08	22.2 / 5045	2.03
C2050-1LTRF3	31.75	10.16	19.05	9.40	5.08	16.50	20.7	22.2	23.3	19.0	5.08	22.2 / 5045	1.91
C2060-1LTR	38.10	11.91	22.23	12.57	5.94	20.70	25.9	27.5	27.5	23.0	5.94	31.8 / 7227	2.89
C2060-1LTRF6	38.10	11.91	22.23	15.57	5.94	21.00	25.9	27.7	28.3	23.0	5.94	31.8 / 7227	2.80
C2060H-1LTRF7	38.10	5.94	28.00	12.57	5.94	22.40	29.2	31.6	—	18.3	5.94	31.1 / 6991	1.61
C2080-1LTR	50.80	15.88	28.58	15.75	7.92	26.20	32.7	35.0	36.5	29.0	11.50	56.7 / 12886	4.54
C2080H-1LTR	50.80	15.88	28.55	15.75	7.92	29.28	36.2	38.9	41.6	29.0	11.10	55.6 / 12499	5.50
C2100-1LTR	63.50	19.05	39.67	18.90	9.53	32.30	40.4	44.7	44.7	35.4	14.50	88.5 / 20114	7.72
C2100-1LTRF2	63.50	19.05	39.67	18.90	9.53	32.30	40.4	44.7	44.7	31.8	9.53	88.5 / 20114	7.42

Note: C-series denotes double pitch. The H suffix indicates heavy duty versions. For chain numbers not listed, please contact us with your drawing or conveyor layout.

How to Select the Right Free Flow Chain

1 Determine the conveyed item weight and pallet size Item weight and pallet footprint drive the required chain size and top roller diameter.
2 Calculate the required chain speed and item speed Use v = vo × D / d to check whether the top roller diameter gives the item speed your line needs.
3 Choose short pitch or double pitch Short pitch 40–100 for lighter loads and smoother running; double pitch C2040–C2100 for heavier loads.
4 Select the attachment variant LTR for standard top roller; LTRF1, LTRF2, LTRF3, LTRF4, LTRF6 or LTRF7 depending on the pallet fixture.
5 Confirm quantity and delivery Provide chain number, attachment, length (in pitches or meters), quantity and destination port.

Typical Applications

Home Appliance Assembly

Washing machines, refrigerators, air conditioners and other white goods assembly lines where pallets must accumulate between stations without stopping the chain.

Auto Parts Conveying

Engine components, transmission parts and sub-assemblies moving between workstations in automotive assembly and parts manufacturing.

Electronic Products Manufacturing

Anti-static performance makes this chain suitable for PCB assembly, display panel and consumer electronics production lines.

Factory Automation & Pallet Conveyors

Any pallet or fixture conveyor system that needs accumulation, buffering or speed change without stopping the drive.

Ordering & Supply Information

What to send for a fast quotation

Chain number (e.g. 50-1-1LTR, C2060-1LTRF6), attachment variant, chain length in pitches or meters, quantity, destination port and OEM/packaging requirements.

Supply terms

Sample and trial orders accepted. Wholesale and OEM/ODM supported. Export packing: wooden case or pallet. Lead time depends on order quantity and stock status — confirm per order.

Frequently Asked Questions

What is a free flow short pitch conveyor chain with top rollers?

It is a short pitch conveyor chain fitted with top rollers on the outer link plates. The chain itself runs at a constant speed, but the top rollers let the tooling plate and conveyed material travel at a different speed, so items can be accumulated, accelerated or released without stopping the chain. This is the basis of double speed conveyor systems.

How is the conveyed item speed calculated for a free flow chain?

The tooling plate and conveyed material speed v is calculated by v = v_o × D / d, where v_o is the chain speed, D is the top roller diameter and d is the base roller diameter. Since D is larger than d, the conveyed material moves faster than the chain.

What series and chain numbers are available?

ANSI short pitch series 40, 50, 60, 80 and 100, plus double pitch series C2040, C2050, C2060, C2080 and C2100. Attachment variants include LTR, LTRF1, LTRF2, LTRF3, LTRF4, LTRF6 and LTRF7 to suit different pallet and fixture layouts.

What materials and features does this chain have?

The chain is made from high-quality alloy steel with heat treatment. Key features include anti-static performance, low noise, stable and reliable conveying, and adjustable conveyed item speed.

What are the typical applications?

Free flow short pitch conveyor chains with top rollers are widely used in home appliance assembly lines, auto parts conveying, electronic product manufacturing and other factory automation and pallet conveyor systems.

Can I order samples or OEM versions?

Yes. Raydafon supports sample orders, wholesale supply and OEM/ODM customization. Send chain number, attachment type, chain length, quantity and destination port for a quotation.

Get Your Free Flow Conveyor Chain Quote

Send chain number, attachment variant, chain length, quantity and destination port. Our team confirms the correct configuration and returns a quotation quickly.

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