Steel Sheaves

Product Overview

Steel sheaves are critical load‑bearing and transmission components used in cranes and lifting equipment. Engineered for heavy loads and high‑frequency operations, these sheaves are made from premium cast steel to deliver outstanding strength, wear resistance, and wire‑rope protection. They play a key role in ensuring the safe and efficient operation of lifting machinery.

Key Advantages

High Load Capacity – Designed to handle heavy‑tonnage lifting applications and absorb impact loads reliably.
Exceptional Durability – Excellent wear and deformation resistance, ideal for high‑duty cycles, frequent starts/stops, and continuous industrial operation.
Superior Rope Protection – Precisely machined rope grooves reduce bending fatigue and extend the service life of steel wire ropes.
Easy Maintenance – Standardized lubrication holes and shaft interfaces enable convenient inspection and servicing.

Application Scenarios

Steel sheaves are recommended for:

5–100 ton general‑purpose and special‑purpose cranes;
High duty‑class environments such as metallurgy, ports, steel plants, and continuous operation systems;
Applications requiring high durability, safety, and long service life;
Explosion‑proof cranes may use nylon or aluminum‑alloy sheaves.

Technical Notes & Replacement Criteria

Lateral runout must not exceed D₀ / 1000 (D₀ = nominal sheave diameter); the sheave should rotate freely by hand.
Rope‑groove radial wear must not exceed 30% of the wire‑rope diameter.
Rope‑groove sidewall wear must not exceed 30% of original wall thickness.
Shaft‑hole surface defects must not exceed 0.25 cm² in area or 4 mm in depth.
Sheaves with cracks must be discarded immediately; repairing cracked cast‑iron sheaves is not permitted.
Cast‑steel sheaves may be repaired and re‑machined only under strict procedures and after passing inspection.
Before installing a new wire rope, ensure the rope groove is smooth and wider than the rope diameter.
Regular inspection is essential; groove wear is the primary factor affecting steel‑rope lifespan.

Reference Specifications

The table below shows common sizes for reference. Final ordering parameters shall follow contract drawings and product data sheets.

Ton Capacity	Sheave Groove Bottom (mm)	Sheave Outer Diameter (mm)	Shaft Length (mm)	Shaft Diameter (mm)	Thickness (mm)	Number of Sheave Pieces
5T	250	300	130	45	70	1
10T	400	450	310	70	154	2
16T	500	565	375	80	210	2
20T	500	565	470	80	254	3
32T	610	680	506	110	330	3
50T	710	785	555	110	382	4
75T	800	920	854	—	690	4
100T	800	920	812	—	882	4

Installation & Maintenance Notes

Clean all lubrication holes, bearings, sleeves, and spacers before assembly.
Ensure oil holes align with bearing and spacer grooves.
Perform a low‑speed no‑load test run after installation.
Inspect rope grooves, cracks, and shaft‑hole conditions regularly.
Replace sheaves that exceed wear limits or show structural defects.
Cast‑iron sheaves must not be welded; cast‑steel sheaves may be restored under controlled procedures.

Warranty & Support

Standard 12‑month warranty (details subject to sales contract).
Factory inspection reports available: chemical composition, mechanical properties, dimensional checks, and optional NDT.
Technical support, on‑site guidance, and spare parts supply available.

Optional Accessories & Upgrades

Sealed or heavy‑duty bearings
High‑performance lubricants or centralized lubrication systems
Soft‑start / frequency‑conversion components to reduce load impact
Rope protectors and damping accessories
Custom double‑groove or multi‑groove sheave designs

Ordering Information

To help us provide an accurate quotation, please include:

A. Equipment type (crane model, lifting capacity, application)
B. Required sheave capacity, outer diameter, groove diameter & width (drawings recommended)
C. Material requirements (cast steel / forged / cast iron / nylon / aluminum, explosion‑proof needs)
D. Quantity, delivery time, and required inspection certificates