Secondary suspension

Assembly

Coil spring bogie suspension, UK (AMCP 706-355).png · Commons ↗ Report photo

The second suspension stage between the bolster and the frame, using air springs and dampers to isolate the carbody and hold ride height as passenger load changes.

Direct parts	8
Total parts	18
Used in	1 assembly
Class	Assembly

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The second suspension stage between the bolster and the frame, using air springs and dampers to isolate the carbody and hold ride height as passenger load changes. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Secondary suspension parts and their functions

8 top-level parts · 18 parts in total · full bill of materials below

Secondary suspension parts diagram: 1 air spring, 2 bolster spring, 3 lateral damper, 4 vertical damper, 5 traction rod, 6 anti-roll bar, 7 levelling valve, 8 fastener set. 18 parts in 8 top-level items. — Secondary suspension parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Air spring	2×	Rolling-lobe air springs
2	Bolster spring	4×	Emergency coil springs
3	Lateral damper	2×	Side-to-side dampers
4	Vertical damper	4×	Bounce dampers
5	Traction rod	2×	Longitudinal links
6	Anti-roll bar	1×	Roll stabiliser
7	Levelling valve	2×	Ride-height valves
8	Fastener Set	1×	Mount hardware

3D model

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Build & assembly graph

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Bill of materials for Secondary suspension

8 top-level lines · 8 rows shown · 18 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Air spring	bg-air-spring	2×	2	·	part
2	Bolster spring	bg-bolster-spring	4×	4	·	part
3	Lateral damper	bg-lateral-damper	2×	2	·	part
4	Vertical damper	bg-vertical-damper	4×	4	·	part
5	Traction rod	bg-traction-rod	2×	2	·	part
6	Anti-roll bar	bg-anti-roll-bar	1×	1	·	part
7	Levelling valve	bg-levelling-valve	2×	2	·	part
8	Fastener Set	fastener-set	1×	1	·	part

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Where the secondary suspension is used

7 products across 1 domain contain it, directly or inside a sub-assembly

Rail & Transit 7 Railway Bogie, Catenary Maintenance Vehicle, Double-Deck Coach, Light Rail Vehicle, Rail Grinding Machine, Shunting Locomotive, Snow Clearing Train (Rotary Plow)

Used in 1 assembly

Railway Bogie

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.10–$20. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Gabriel India gabrielindia.com ↗	Pune, IN	Shock absorbers & dampers	2,000 pcs	5–8 wks
🇮🇳Jamna Auto jaiparabolic.com ↗	Yamunanagar, IN	Leaf & parabolic springs	2,000 pcs	5–8 wks
🇮🇳Munjal Showa munjalshowa.net ↗	Gurugram, IN	Shock absorbers & struts	2,000 pcs	5–8 wks
🇨🇳Chongqing Sokon sokonindustry.com ↗	Chongqing, CN	Springs & auto parts	2,000 pcs	5–8 wks
🇮🇳NRB Bearings nrbbearings.com ↗	Mumbai, IN	Needle & auto bearings	2,000 pcs	5–8 wks