Boot Bearing

Boot bearing assemblies designed to support and guide the boot shaft in chain and belt bucket elevators. These assemblies are critical in maintaining shaft alignment, rotational smoothness, and ensuring mechanical integrity in the dusty and high-load environment at the elevator’s base. We offer ready-to-fit bearing blocks and matching bushings, tailored for specific shaft diameters and load classes—compliant with demanding operating conditions in cement, mining, steel, and thermal power sectors.

Assembly Overview

Each boot bearing assembly typically includes:

Component	Function
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

Feature	Advantage
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

Fit-and-Run Kits from Constromech

Whether upgrading an aging boot section or building a new bucket elevator from scratch, CMECH boot bearing assemblies are built to deliver performance, reliability, and operational ease — all with zero compatibility issues and engineered precision.

Reach out to our technical sales team for drawings, load recommendations, or a quotation for complete boot shaft kits customized to your plant layout.