Pillar Jib Crane Models, Parameters & Selection Guide
Key Points A cantilever crane (also known as a jib crane) consists of a column, cantilever, electric hoist, and slewing mechanism, and is widely used for workstation hoisting and workshop material handling. ① It comes in three main types: BZD pillar-mounted (column fixed to the floor foundation, cantilever slews 270–360°), wall-mounted/wall-traveling (installed on factory building columns or walls, saving floor space), and mobile (equipped with casters at the base for flexible deployment shared across multiple workstations); ② Lifting capacity ranges from 0.125 to 10 t, boom length from 2 to 10 m, and lifting height from 2 to 8 m; ③ The BZD model offers both manual (rotation) and electric slewing options. Kelude Heavy Industry's BZD series cantilever cranes have evolved into 18 models and specifications, with non-standard customization available.
Cantilever Crane Types and Configurations
A cantilever crane (also referred to as a jib crane) is a light-duty lifting device composed of a column (or wall bracket), cantilever (jib), electric hoist, and slewing mechanism. Unlike bridge cranes and gantry cranes, cantilever cranes require no crane rail, making them highly flexible to install and ideally suited for workstation-level material handling and assembly tasks in workshops. Jib cranes are the preferred choice for workstation hoisting thanks to their compact design, minimal floor footprint, and low capital investment.
| Model | Lifting Capacity(t) | Boom Length(m) | Rotation Angle | Lifting Height(m) | Slewing Type | Reference Price(CNY) |
|---|---|---|---|---|---|---|
| BZD250 | 0.25 | 2~4 | 270° | 2~4 | Manual | 3000~5500 |
| BZD500 | 0.5 | 3~5 | 270° | 3~5 | Manual/Electric | 5000~9000 |
| BZD1000 | 1 | 3~6 | 270° | 3~6 | Manual/Electric | 8000~15000 |
| BZD2000 | 2 | 3~7 | 360° | 3~6 | Electric | 12000~25000 |
| BZD3000 | 3 | 4~8 | 360° | 3~6 | Electric | 18000~35000 |
| BZD5000 | 5 | 4~8 | 360° | 3~6 | Electric | 25000~45000 |
| BZD10000 | 10 | 4~10 | 360° | 3~8 | Electric | 40000~70000 |
Note: The above prices are reference prices for Kelude Heavy Industry's BZD series pillar jib cranes (including column and electric hoist), excluding installation and freight. Electric slewing is optional.
Jib Crane Selection: Key Considerations
Jib Crane Sizing: Boom Moment & Foundation Load Calculations
Proper jib crane selection requires verifying both the bending moment at the boom root and the foundation load. The boom root moment is calculated as M = Q × L × Kd, where Q is the lifting capacity (including the spreader weight), L is the boom length, and Kd is the dynamic load factor (1.25 for electric hoists, 1.10 for manual operation). The foundation overturning moment is Mbase = M × 1.5 (safety factor).
Example: BZD1000 (1t × 5m boom)
M = (1,000kg × 9.81) × 5m × 1.25 = 61,313N·m ≈ 61.3kN·m. The base plate measures 800×800mm, with a foundation dead weight of approximately 1.5t × 9.81 = 14.7kN. The required anti-overturning moment for the foundation is ≥ 61.3 × 1.5 = 92kN·m. Anchor bolts are grade 8.8 M24 × 4, each with a tensile capacity of approximately 120kN. Kelude Heavy Industry supplies standard foundation drawings and anchor bolt layouts for every model.
Slewing Mechanism Selection: Manual vs. Electric
The slewing mechanism is what sets a jib crane apart from other crane types. Manual slewing uses a thrust ball bearing with manual push-pull operation of the boom — low cost but less efficient, suitable for light loads up to 0.5t and undemanding workstations. Electric slewing combines a slewing motor, gearbox, and slewing bearing for effortless operation and precise positioning, making it the right choice for loads of 1t and above or frequent slewing cycles.
Slewing bearing selection: Based on the slewing torque Mslew = Q×e + Gboom×L/2 (where e is the eccentricity), select a slewing bearing with a dynamic load rating ≥ 1.25 × Mslew. Kelude Heavy Industry's BZD series models rated 1t and above come standard with electric slewing, featuring an internal gear slewing bearing and a SEW-Eurodrive or Guomao slewing gearbox, with slewing speed adjustable from 0.5 to 1.5 r/min.
Foundation Construction & Installation Acceptance Standards
Foundation work: BZD series cranes require a reinforced concrete independent foundation built to the supplied drawings. Concrete grade must be ≥ C25, anchor bolt embedment deviation ≤ ±5mm, and foundation top surface levelness ≤ 3mm. Allow a curing period of at least 7 days before column installation.
Installation sequence: ① Hoist the column into position and align (perpendicularity ≤ 1/1000) ② Initially tighten the anchor bolts ③ Pour the secondary grout layer ④ Cure for at least 3 days ⑤ Install the slewing bearing and boom assembly ⑥ Mount the electric hoist and electrical system ⑦ Conduct a no-load trial run ⑧ Apply a 125% static load for 10 minutes to verify structural strength.
Acceptance criteria: Boom end deflection ≤ L/250 under full load, smooth slewing without binding (manual slewing force ≤ 50N), and boom sway ≤ ±100mm after emergency stop braking. Kelude Heavy Industry provides on-site installation supervision services.
BZD Pillar Jib Crane Series: Complete Specification Table
| Model | Lifting Capacity(t) | Boom Length(m) | Rotation Angle | Lifting Height(m) | Slewing Type | Hoist Power(k W) | Base Dimensions(mm) | Reference Price(CNY) |
|---|---|---|---|---|---|---|---|---|
| BZD250 | 0.25 | 2~4 | 270° | 2~4 | Manual | 0.4 | 400×400 | 3,000~5,500 |
| BZD500 | 0.5 | 3~5 | 270° | 3~5 | Manual/Electric | 0.8 | 500×500 | 5,000~9,000 |
| BZD1000 | 1 | 3~6 | 270° | 3~6 | Manual/Electric | 1.5 | 600×600 | 8,000~15,000 |
| BZD2000 | 2 | 4~7 | 270° | 3~6 | Electric | 3.0 | 700×700 | 15,000~25,000 |
| BZD3000 | 3 | 5~8 | 270° | 3~7 | Electric | 4.5 | 800×800 | 22,000~38,000 |
| BZD5000 | 5 | 5~10 | 270° | 3~8 | Electric | 7.5 | 900×900 | 35,000~60,000 |
Wall-Mounted vs. Mobile Jib Crane Specifications
Wall-Mounted / Wall-Traveling: The column is fixed to the factory wall or building column, taking up no floor space. Lifting capacity ranges from 0.125 to 3 t, with boom lengths of 2–6 m and rotation angles of 180–270° (limited by the wall structure). Installation requirements: concrete wall grade ≥ C25, wall thickness ≥ 200 mm, secured with anchor bolts or chemical anchors. Kelude wall-mounted jib cranes are rated for loads up to 3 t; above that, a pillar-mounted design is recommended. The wall bracket must be engineered with bolt quantity and size calculated based on bending moment.
Mobile: Equipped with swivel casters and adjustable outrigger legs at the base, allowing shared use across multiple workstations. Lifting capacity ranges from 0.125 to 1 t, with boom lengths of 2–4 m, secured by base counterweight or expansion bolts. When operating a mobile jib crane, the outrigger legs must be fully extended and the wheels locked — lifting with the outriggers retracted is strictly prohibited. Kelude mobile jib cranes come standard with a foldable boom and counterweight box (for storing ballast blocks); the boom can be folded when not in use to save space.
Recommended Standards
• GB/T 6974.6-2008 — Cranes — Terminology — Part 6: Railway Cranes
• GB/T 6974.7-2008 — Cranes — Terminology — Part 7: Floating Cranes
• GB/T 24818.4-2009 — Cranes — Access and Safety Guarding — Part 4: Jib Cranes
Frequently Asked Questions
Q: How do I choose between a pillar-mounted and a wall-mounted jib crane?
A: If the workstation is in the middle of the workshop, go with a pillar-mounted unit (independent concrete foundation). If the workstation is against a wall or near a building column, a wall-mounted unit is the better fit. Wall-mounted cranes require no floor foundation and cost less to install, but their capacity is limited by the wall structure. Kelude wall-mounted jib cranes are rated up to 3 t.
Q: Do jib cranes require mandatory inspection?
A: Under TSG Q0002, a jib crane with a lifting capacity of 0.5 t or more is classified as special equipment and requires a manufacturing license, type test, and periodic inspection. Jib cranes rated below 0.5 t are exempt. All Kelude BZD-series models hold valid Type Test Certificates.
Q: What does the foundation look like, and how large does it need to be?
A: The BZD pillar-mounted foundation is a reinforced concrete independent footing. Base plate dimensions: approximately 500 × 500 mm for 1 t capacity and 800 × 800 mm for 5 t capacity, with a minimum depth of 1.2 m (depending on soil conditions). Kelude provides foundation drawings — simply build to the drawing.
Q: What is the warranty period for jib cranes?
A: Kelude jib cranes carry an 18-month warranty from the date of shipment. Within the warranty period, non-wear parts damaged under normal use are repaired or replaced free of charge. The electric hoist and slewing mechanism motor are covered under the same warranty terms.
This completes the full selection guide for BZD-series pillar-mounted, wall-mounted, and mobile jib cranes — covering specifications, pricing, and application guidance. Kelude's jib crane lineup includes 18 standard models, with support for custom boom lengths, column heights, and slewing configurations. Contact the Kelude engineering team for a tailored selection proposal.
