Boot Bearing
Boot bearing assemblies that support and guide the boot shaft in chain and belt bucket elevators — ready-to-fit bearing blocks with matching bushes.
- 6 standard sizes
- Made to your drawing
Dimensions
Find your size
Choose the type, then pick a size to see its dimensions, then request a quote for exactly that size.
Selected — Bearing blocks
CBB 18-4
- M
- 178
- N
- 165
- O
- 82
- P
- 65
- Q
- 18
- R
- 52
- S
- 17
- T
- 30
- I
- 112
Size not listed? We manufacture to your drawing or sample —send us your requirement.
View all 2 sizes (full table)
| Type | M | N | O | P | Q | R | S | T | I |
|---|---|---|---|---|---|---|---|---|---|
| CBB 18-4 | 178 | 165 | 82 | 65 | 18 | 52 | 17 | 30 | 112 |
| CBB 18-11 | 230 | 203 | 108 | 90 | 20 | 55 | 21 | 34 | 138 |
Selected — Bearing bushes
CBB 18-4 · 60
- M
- 110.2
- O
- 17
- P
- 64
- Q
- 54
- R
- 15
- Max. load
- 700kg
- Min. load
- 50-60
Size not listed? We manufacture to your drawing or sample —send us your requirement.
View all 4 sizes (full table)
| Type | M | N | O | P | Q | R | Max. load | Min. load |
|---|---|---|---|---|---|---|---|---|
| CBB 18-4 | 110.2 | 60 | 17 | 64 | 54 | 15 | 700kg | 50-60 |
| CBB 18-4 | 110.2 | 74.5 | 21 | 64 | 54 | 15 | 700kg | 50-60 |
| CBB 18-11 | 135.4 | 87.3 | 21 | 88.9 | 80 | 27 | 1200kg | 50-60 |
| CBB 18-11 | 135.4 | 100 | 21 | 88.9 | 80 | 27 | 1200kg | 50-60 |
Assembly Overview
Bearing Block Housing
Structural support for shaft, bolted to elevator base plate; includes bore for bush
Bronze or cast steel Bearing Bushing
Precision insert that supports shaft rotation and absorbs wear
Dust & grease seals (optional)
Protects bearing bore from contaminants, enhances lubrication retention
Base Plate and Bolting Set
Mounting hardware pre-aligned for bolt-on installation on elevator casing
Technical Features (As per CMECH Design)
Bearing Block (CBB Series)
- Machined from high-strength cast steel or fabricated alloy steel plate
- Supplied with pre-drilled and tapped mounting holes, face machined for flatness
- Designed for easy access and fast replacement during shutdowns
Available sizes
- CBB 18-4: Shaft housing Ø52 mm, Load capacity up to 700 kg
- CBB 18-11: Shaft housing Ø55 mm, Load capacity up to 1200 kg
Bearing Bush
- Replaceable bushing made from cast or alloy steel
- Fine surface finish on ID (inner diameter) ensures minimal friction and smooth shaft rotation
- Double-step seating design (Q & R dimensions) for secure fit and easy extraction
- Precision matched to block and shaft journal — available in sizes to match 52–55 mm shaft diameters
Performance & Application Benefits
Anti-Friction & Self-Cleaning Geometry
Mitigates dust ingress and reduces the need for frequent maintenance
Compact Footprint
Fits even in restricted elevator pit areas with zero compromise on load capacity
Fully Machined Seating & Centreline Matching
Guarantees parallel alignment and vibration-free operation at high speeds
Why Source from Constromech?
In-House Precision Manufacturing
All bearing blocks and bushes are CNC-machined for dimensional repeatability and load tolerance.
Material Traceability & Load Testing
Supplied with certificates of material origin, hardness testing, and max-load validation (up to 1.2 tons per assembly).
Rapid Delivery & Spare Availability
Stock availability for CBB 18-4 and CBB 18-11; other sizes custom manufactured in 7–10 working days.
Custom Assembly for Boot Shaft Systems
We offer full boot shaft kits, including: collars/grub
- Shaft (machined ends and journal zones)
- Bearing block and bushings
- Locking collars / grub screws
- Bolt sets for mounting
One-Stop Support
Engineering support for bearing selection, field alignment, and shaft installation guidelines ensures faster commissioning and greater equipment longevity
Applications
Cement plants (clinker elevators, raw meal lifts)
Thermal power stations (fly ash return elevators)
Fertilizer and chemical handling units
Aggregate and quarrying bucket elevators
Retrofit kits for older OEM elevators
Other Round Link Chain Elevator components
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55 sizesComplete, ready-to-install drive and tail sprocket assemblies for chain bucket elevators and chain conveyors — machined, balanced and test-mounted so your crew can fit, torque and run.
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19 sizesPrecision-forged chain shackles to DIN 745 and DIN 5699 — the critical link between chain and bucket in heavy-duty chain bucket elevators.
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View sizes & detailsNeed boot bearing for your plant?
Send us your drawing or requirement — we respond within one business day.