Escalator Step Chain

Escalator Step Chain

The escalator step chain is the part of the mechanism that connects the upper landing to the drive. Thus you will experience the “stepping up” motion when you step up an escalator. Drive 12 powers the handrails and step chain 16 on each level of the escalator. Each escalator step chain is connecting to an axle and rotates about its axis.
Step chains in escalators are made with varying pitches to minimize the effects of chordal action. The smallest pitch in an escalator step chain makes it work more smoothly. Installation of an escalator step chain varies by country and building. The bearing part of the chain plate is the focal point of the chain plate and is where the step shaft rests. The extension of the pins on the step shaft and step side will carry the weight of the steps.
Step chains on an escalator are a special type. These escalator components are used to move passengers up and down the escalator. However, the problem with these components is that they can be challenging to assemble and disassemble in the field. It is difficult to force the connecting axle and stub axle together. For a proper press fit, you will need to heat the connecting axle and stub axle and then press them together.

Specifications of Escalator Step Chains

There are various types of step chains and roller chains used in escalators. Step chains are more durable than regular chains, as the pin diameter is larger and can carry more weight than regular chains. Moreover, they are designed with tight coordination between step chains and chain links to reduce the noise of the ride. Moreover, there are lubrication-free and low-noise chains, which are ideal for escalators installed in quiet environments.

Chain No.	Pitch	Roller diameter	Width between inner plates	Pin diameter	Pin length	Inner plate depth	Plate thickness	Distance between steps (three pitches)	Ultimate tensile strength	Average tensile strength	Weight per step
	P	d1	b1	d2	L max	h2	t/T	Le	Q min	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	kN/lbf	kN	kg
ST131	131.33	80.00	27.0	24.00	54.5	50.0	5.0	394.00	180.0/40465	198.0	3.700
T131	131.33	80.00	27.0	14.63	54.5	50.0	5.0	394.00	180.0/40465	198.0	2.480
JJT131	131.33	80.00	27.0	14.63	56.5	35.0	5.0	394.00	123.0/27651	150.0	2.310
ST133	133.33	70.00	27.0	14.63	55.0	40.0	5.0	400.00	180.0/40465	198.0	2.450
JJT133	133.33	70.00	27.0	14.63	56.5	35.0	5.0	400.00	127.4/28640	140.1	2.380
ST133F1	133.33	80.00	27.0	24.00	54.5	50.0	5.0	400.00	180.0/40465	198.0	3.530
ST133F3	133.33	75.00	25.4	14.63	54.2	35.0	5.0	400.00	123.0/27651	135.3	2.160
ST133F4	133.33	76.00	27.0	14.63	55.0	40.0	5.0	400.00	180.0/40465	198.0	2.500
ST133F5	133.33	39.37	33.7	22.00	70.0	60.0	7.0/6.0	400.00	350.0/78683	385.0	4.776
ST133F6	133.33	39.37	33.7	16.00	65.0	50.0	5.0	400.00	170.0/38217	187.0	3.360
JJT131F1	131.33	76.20	23.6	12.70	52.0	35.0	5.0	394.00	90.0/20232	99.0	2.050
JJT131F2	131.33	76.20	23.6	12.70	52.0	35.0	5.0	394.00	90.0/20232	99.0	2.050
JJT131F3	131.33	76.20	23.6	15.00	52.0	35.0	5.0	394.00	123.0/27651	135.3	2.200
JJT131F4	131.33	76.20	23.6	15.00	52.0	35.0	5.0	394.00	123.0/27651	135.3	2.200
ST135F2	135.47	76.20	23.6	12.7/15.0	54.2	35.0	5.0	406.40	90/20232	99.0	2.050

Chain No.	Pitch	Roller diameter	Width between inner plates	Pin diameter	Pin length		Bush diameter		Bush length	Plate dimension		Distance between steps	Ultimate tensile strength	Average tensile strength	Weight per step
	P	d1 max	b1	d2	L max	Lc max	d3	d4	L1 max	h2 max	t/T	Le	Q min	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	kN/lbf	kN	kg
C-13T	68.40	32.0	20.6	14.29	45.0	50.85	23.5	28.5	40.85	38.5	4.8	410.4	127.4/28640	140.0	2.30
P67-FD	67.73	28.5	27.0	14.29	52.3	57.00	23.0	27.0	36.85	38.0	4.8	406.4	130.0/299225	140.0	2.19
C-16V	68.40	28.0	29.6	14.29	53.9	59.60	22.0	26.0	29.35	39.6	4.8	410.4	161.7/36351	178.0	2.38
C-12V	68.40	28.0	20.7	12.70	41.9	47.40	21.0	26.0	30.50	39.6	4.0	410.4	140.0/31473	154.0	1.82
C-8V	68.40	28.0	20.7	12.70	41.9	47.40	21.0	26.0	30.50	39.6	4.0	410.4	100.0/224809	110.0	1.82
ST67HF2	67.73	28.5	27.0	14.63	52.7	57.00	23.0	27.0	36.85	40.0	4.8/5.5	406.4	186.2/41859	204.0	2.31
ST67HF1	67.73	28.5	27.0	14.63	52.7	57.00	23.0	27.0	36.85	40.0	4.8/5.5	406.4	160.0/35969	176.0	2.31

Chain No.

Pitch

Roller diameter

Width between inner plates

Pin diameter

(Hollow) Pin Diameter

Pin length

Plate dimension

Ultimate tensile strength

Average tensile strength

Weight per step

P

d1 max

b1 min

d2 max

d3 max

d4 max

L max

Lc max

h2

t/T max

Q min

Q0

q

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

kN/lbf

kN

kg

PT135HP

135.46

45.0

23.0

25.0

20.0

28.0

47.1

55.1

70

6.0/5.0

250/56202

275.0

4.5

How an Escalator Step Chain Works?

An escalator step chain is a type of conveyor made up of small pitch chains that are installed on attachments. These chains carry the material directly on the chain or onto jigs installed on the attachments. Each attachment has a specific type of material to convey. There are many different types of attachments, and modern standard ones are available for fast delivery and economy. The steps on an escalator should support at least 450 kg/m2 of load without distortion.

Escalator Step Chain Replacement

If you have to change the step chain on an escalator, here are the steps that you need to follow: Remove the inner and outer cover plates. Remove the apron plates as well. Next, run part of the chain to the position where you removed the covers and apron plates. Tighten the lower end of the loose step chain. Alternatively, you can use special components to repair the chain without removing it.
After you have removed the large chain, it is time to install the new step chain. It should be placed outside of the large frame. Once the chain is installing, you must install the guide chain around it. You must ensure that you use a constant track route when replacing the large chain. You cannot do this work on an individual basis. Ideally, you should have a team of two people to perform this job. If you are replacing a single chain, this work will take around one day.

Escalator Step Chains and Sprockets

There are several types of chains and sprockets to choose from. Some are narrow, others are wide, and each has a different pitch diameter and sprocket bore. For example, chains with large pitch diameters require sprockets with larger teeth than those with smaller roller-pin centers. Ultimately, you should choose sprockets that fit the chain and bike properly.
Our escalator step chains and sprockets are highly reliable and durable products. A steel finish is common. Customized for specific applications. There are also several different sizes of sprockets, which will depend on the amount of torque they must exert. If you need to choose a sprocket with an ANSI number, you should select the one that meets the exact requirements of your machine.
Metal sprockets have different designs and for both types of applications. Steel split sprockets are easy to install and remove. They can also be made of aluminum. Stainless steel sprockets are available for extremely corrosive environments. As one of the professional transmission parts manufacturers and suppliers, Power-trans has a wide range of drive chains and sprockets for sale. Contact us now!