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Discussion History

Rotating Element

Assembly

Shaft carrying multiple impellers, balance device and sleeves, dynamically balanced as a unit. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Rotating Element parts and their functions

9 top-level parts · 25 parts in total · full bill of materials below
Rotating Element parts diagram: 1 pump shaft, 2 first-stage impeller, 3 series impeller, 4 impeller wear ring, 5 balance drum, 6 balance drum bush, 7 shaft sleeve, 8 impeller drive key, 9 shaft locking nut. 25 parts in 9 top-level items.
Rotating Element parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Pump Shaft 1× Forged through shaft
2 First-Stage Impeller 1× Double-suction or low-NPSH first-stage impeller
3 Series Impeller 5× Series intermediate-stage impellers
4 Impeller Wear Ring 6× Rotating wear ring on each impeller
5 Balance Drum 1× Balance drum offsetting axial thrust
6 Balance Drum Bush 1× Stationary throttling bush for the balance drum
7 Shaft Sleeve 2× Renewable shaft sleeve under each seal
8 Impeller Drive Key 6× Drive key locating each impeller
9 Shaft Locking Nut 2× Locking shaft nut retaining the stack

3D model

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Build & assembly graph

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Bill of materials for Rotating Element

9 top-level lines · 9 rows shown · 25 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Pump Shaft boiler-feed-pump-shaft 1× 1 · part
2 First-Stage Impeller boiler-feed-pump-impeller-first 1× 1 · part
3 Series Impeller boiler-feed-pump-impeller 5× 5 · part
4 Impeller Wear Ring boiler-feed-pump-impeller-wear-ring 6× 6 · part
5 Balance Drum boiler-feed-pump-balance-drum 1× 1 · part
6 Balance Drum Bush boiler-feed-pump-balance-drum-bush 1× 1 · part
7 Shaft Sleeve boiler-feed-pump-shaft-sleeve 2× 2 · part
8 Impeller Drive Key boiler-feed-pump-impeller-key 6× 6 · part
9 Shaft Locking Nut boiler-feed-pump-shaft-nut 2× 2 · part

Where the rotating element is used

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

Used in 1 assembly

Boiler Feedwater Pump

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 $0.50–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Flex (Singapore)
flex.com ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks
🇮🇳Dixon Technologies
dixoninfo.com ↗ 		Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
🇨🇳BYD Electronics
bydelectronic.com ↗ 		Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗ 		Singapore Electronics contract mfg 1,000 pcs 6–10 wks