Escalator Step Chains — Engineering Replacement and OEM-Style Supply
Product Overview
CARPARTNER supplies escalator step chains for replacement, maintenance and equipment-support projects. The product range shown in the supplied technical table covers multiple pitch classes, roller diameters, pin diameters, inner-plate dimensions, pin lengths, attachment types and step-spacing configurations.
An escalator step chain connects and drives the steps through the escalator track. The chain works together with step rollers, sprockets, tracks and step shafts, so correct dimensional matching is essential for smooth step movement, synchronized step spacing and reliable service.
Key Features
Multiple pitch classes: The reference table includes 66.27 mm, 67.73 mm, 68.40 mm, 100.00 mm, 101.60 mm, 133.33 mm, 135.46 mm and 135.73 mm pitch options.
Model-specific dimensional matching: Roller diameter, width between inner plates, pin diameter, inner plate depth and pin length are listed by chain number.
Multiple attachment configurations: The table identifies D, W, Y and combined D/Y attachment forms.
Step-spacing reference: Link quantity and star distance are included for the listed configurations.
Replacement-oriented supply: Suitable for quotation and identification against chain samples, drawings, machine information or original part numbers.
Technical data transparency: The original table notation and decimal precision are retained in the accompanying Excel workbook.
Matched specification review: For escalator applications, the chain should be checked as a complete system, including the pair, sprockets, rollers, tracks, step shafts and tension arrangement
Technical Parameters from the Reference Table
All dimensional values are shown in mm. Q(min) is shown in kN as displayed in the source table.
Chain No.
Pitch P
Roller diameter d1(max)
Width between inner plates b1(min)
Pin diameter d2(max)
Inner plate depth h2(max)
Pin length b4(max)
Q(min)
Attachment types
Link quantity
Star distance
ST66
66.27
25.40
20.6
9.54
30.00
41.0
88.2
Y
6
400.0
ST100A
100.00
25.40
25.4
11.06
32.00
50.2
117.6
D, Y
4
400.0
ST100B
100.00
25.40
25.4
12.67
38.00
54.0
176.4
D, Y
4
400.0
ST100C
100.00
25.40
25.4
14.63
40.00
53.0
221.5
W
4
400.0
ST100D
100.00
34.30
34.3
20.50
50.00
73.5
254.8
W
4
400.0
ST100E
100.00
48.26
45.7
29.23
65.00
94.1
441.0
W
4
400.0
ST100F
100.00
52.00
27.5
30.00
70.50
58.0
245.0
W
4
400.0
ST133
133.33
70.00
27.0
14.63
40.50
54.8
180.0
D
3
400.0
ST67A
67.73
28.00
15.8
11.11
28.00
40.0
58.8
Y
6
406.4
ST67B
67.73
28.00
25.4
14.27
38.50
51.0
148.0
Y
6
406.4
ST67C
67.73
28.00
30.7
14.29
48.26
58.0
137.2
Y
6
406.4
ST68
68.40
32.00
20.7
14.29
38.50
46.0
130.2
Y
6
406.4
ST101A
101.60
25.40
22.2
14.27
40.00
46.0
177.9
D
4
406.4
ST101B
101.60
38.10
35.8
19.80
50.00
64.0
294.0
Y
4
406.4
ST135A
135.46
70.00
27.0
14.63
45.20
53.0
143.0
D
3
406.4
ST135B
135.46
76.40
24.0
15.00
35.00
50.0
90.0
D
3
406.4
ST135C
135.73
76.20
24.0
12.70
35.00
50.0
120.9
D
3
407.2
Escalator Step Chains ST66–ST135 | Replacement and OEM-Style Supply
Attachment Type Reference
The source image explains the attachment types as follows:
D: Extended pin type
W: Hollow pin type
Y: Hole attachment to inner link type
D, Y: Combined attachment notation shown in the source table
The attachment form must be checked against the actual step-shaft connection and the escalator manufacturer’s design. Do not select a chain from pitch alone.
Typical Escalator and Moving-Walk Applications
Escalator step chains are used in passenger-transport systems where the chain carries and synchronizes the steps through the track. Publicly available industry references describe applications in commercial buildings, shopping facilities, transport stations, airports, metro systems and moving walks.
Typical supply scenarios include:
Escalator chain replacement during planned maintenance
Refurbishment of commercial-building escalators
High-traffic transport and public-transit equipment support
Moving-walk and pallet-chain identification
OEM-style replacement against an original sample or part number
Chain-pair replacement where synchronized length and step spacing are required
The application references also emphasize that the chain is part of a larger system. Step rollers, sprockets, tracks, step shafts, lubrication and tension should be checked together during replacement or overhaul.
Maintenance and Inspection Considerations
Maintenance should follow the escalator manufacturer’s service instructions and the applicable requirements for the installation. Publicly available maintenance guidance commonly recommends checking:
Chain elongation and pitch condition over multiple links
Left/right chain synchronization and step alignment
Roller rotation, roller wear and track contact
Sprocket tooth wear, hooking and alignment
Chain tension and abnormal slack
Pin, bushing, plate and attachment condition
Lubrication condition and contamination from dust or debris
Unusual clicking, vibration, noise or step movement
Do not use the Q(min) value in the table as a field operating load. The correct replacement chain, chain pair, tension setting, lubrication method and replacement interval must be confirmed with the equipment manufacturer or qualified escalator service personnel.
OEM / ODM and Custom Supply
CARPARTNER can review requests based on:
Original sample or used chain section
OEM or manufacturer part number
Technical drawing or catalogue page
Measured pitch and roller dimensions
Attachment requirements
Required chain length, link quantity and matched-pair arrangement
For non-standard requirements, please send the original drawing, machine information, sample photos and required quantity. We will confirm the available specification, compatibility information, production details and delivery schedule before quotation.
Request a Quote
Please send us the escalator brand, model, original chain number or clear photos and measurements. Our team will check the specification and reply with the recommended chain configuration, price and delivery information.
Contact CARPARTNER for escalator step chains, moving-walk chains and related automotive/industrial parts sourcing support from China.
auto parts, construction machinery spare parts and motorcycle parts ,including engine parts ,chassis parts ,braking systems parts, electrical parts,gearbox parts,hydraulic parts,filter system parts.