1. Access clearance
Measure the narrowest doorway, corridor, elevator entrance and turning area along the complete travel route. Allow clearance beyond the machine’s stated transport width and height.
1.2-Ton vs 1.5-Ton vs 2-Ton Spider Crane: Which Is Right for Indoor Lifting?
2026-09-14
Product Comparison
Compare 1.2-ton, 1.5-ton and 2-ton spider cranes for indoor lifting based on machine width, lifting height, working radius and application needs, with key specifications for the compact Onchtech 2-ton crawler spider crane.
Choosing between a 1.2-ton, 1.5-ton and 2-ton spider crane for indoor lifting is not simply a matter of selecting the highest nominal capacity. The correct machine must pass through the available access route, reach the lifting point, deploy its outriggers safely and handle the required load at the actual working radius.
For equipment installers, curtain wall contractors and factory maintenance teams, a compact spider crane can bring lifting capability into areas that conventional mobile cranes cannot reach. The Onchtech 2-ton crawler spider crane is designed for this type of narrow-access work, combining a transport width of 0.71 m with rubber tracks, a four-section telescopic boom and independently adjustable outriggers.
Quick selection guidance
A smaller spider crane may be suitable when access is extremely restricted and the load, height and outreach requirements are limited. A 1.5-ton class machine can provide an intermediate balance, while a 2-ton class machine is generally considered when the project requires greater lifting capability or operating flexibility.
Important: nominal crane capacity does not represent the load that can be lifted at every boom length or radius. Final selection must be based on the manufacturer’s load chart, the planned outrigger configuration, site conditions and an appropriate safety margin.
How the three capacity classes differ
| Selection factor | 1.2-ton class | 1.5-ton class | 2-ton class |
|---|---|---|---|
| Typical selection priority | Compact access and lighter lifting tasks | Balance between compactness and lifting requirement | Higher nominal capacity and broader task flexibility |
| Suitable decision context | Light components and highly constrained access routes | Moderate loads where both access and capacity matter | Equipment installation, maintenance and lifting that require additional capacity margin |
| Site checks still required | Machine dimensions, load chart, reach and outrigger footprint | Machine dimensions, load chart, reach and outrigger footprint | Machine dimensions, load chart, reach and outrigger footprint |
| Published model data | Confirm against the specific supplier model | Confirm against the specific supplier model | Onchtech model details are provided below |
Machine width, lifting height and working radius vary by manufacturer and model. Capacity-class labels alone should not be used as final selection criteria.
What to check before choosing an indoor spider crane
2. Load at working radius
Determine the total lifted weight, including the component, hook and lifting accessories. Then verify allowable capacity at the required horizontal radius and boom configuration.
3. Lifting height
Compare the hook height needed at the installation point with the machine’s available boom length, lifting geometry and overhead clearance.
4. Outrigger area
Confirm that the work area provides sufficient space for the required outrigger setup and that the supporting surface can safely carry the imposed loads.
5. Floor and terrain conditions
Assess floor loading, surface protection, slopes, steps and uneven ground. Ground-bearing capacity and suitable support measures must be evaluated before lifting.
6. Power and emissions
For indoor operation, review ventilation, local emissions requirements and the available power source. Engine and electric configurations should be matched to the jobsite.
Onchtech 2-ton crawler spider crane
The Onchtech 2-ton model is a compact mobile lifting machine for narrow indoor areas and other restricted jobsites. It has an overall transport width of 0.71 m, an operating weight of 1.8 tonnes, a maximum above-ground lifting height of 6.5 m and a maximum working radius of 6 m.
0.71 m
Overall width
1.8 t
Machine weight
6.5 m
Maximum above-ground lifting height
6 m
Maximum working radius
Compact mobility and stable setup
- Rubber crawler tracks: provide traction while helping reduce damage to finished indoor surfaces compared with steel tracks.
- Narrow transport profile: the 0.71 m machine width supports movement through restricted passages, subject to route clearance and turning-space verification.
- Four-section telescopic boom: the high-strength manganese-steel boom uses a 2 m × 4-section arrangement and can be customized.
- Adjustable outriggers: manually deployed, hydraulically supported three-section outriggers allow individual adjustment for setup on uneven terrain.
- Continuous rotation: the crane provides 0–360° continuous slewing, supporting positioning around the lifting area.
- Optional remote operation: a wireless remote control can provide additional operating distance and visibility where the lifting plan permits.
Key specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Overall dimensions | 2.78 × 0.71 × 1.62 m | Machine weight | 1.8 t |
| Maximum working radius | 6 m | Maximum above-ground lifting height | 6.5 m |
| Boom arrangement | 2 m × 4 sections, customizable | Boom angle | 0–78° |
| Hook lifting speed | 0–8 m/min, four-part line | Wire rope | Φ8 mm × 45 m |
| Slewing range | 0–360° continuous | Travel speed | 0–2.5 km/h |
| Gradeability | 25° (36%) | Travel drive | Hydraulic |
| Engine | Honda 390 cc; other brands available by configuration | Starting method | Electric or manual |
| Fuel and tank volume | Gasoline, 8 L | Electric motor voltage | AC 380 V |
| Maximum outrigger footprint | 3,620 mm long × 3,440 mm rear × 3,470 mm front | Control | Manual operation; remote control optional |
Specifications and available configurations should be confirmed for each order. Actual lifting capacity depends on radius, boom position, outrigger deployment and the applicable load chart.
Indoor and restricted-access applications
Glass curtain wall installation
Moving through constrained access routes and positioning lifting equipment near façade installation points.
Factory maintenance
Lifting machinery components and maintenance materials inside workshops with limited overhead or floor space.
Rooftop and floor-level lifting
Supporting planned lifting tasks where equipment weight, access and structural load limits have been verified.
Power facility work
Handling components in substations and other space-constrained power construction or maintenance environments.
Available configurations and customization
Onchtech supports OEM, ODM and brand cooperation for global B2B customers. Depending on project and destination-market requirements, configuration options can include:
- Honda, KOOP, Briggs & Stratton or other selected engine options
- Engine configurations intended to meet applicable Euro V or EPA requirements
- Gasoline or diesel power configuration
- Wireless remote control and moment control system
- Work platform or hydraulic fly jib options
- Custom boom and machine configuration
- Red, green, yellow, white, grey or black exterior color options
A practical five-step selection process
- Define the lift: record the load weight, dimensions, center of gravity and required lifting accessories.
- Measure the route: verify door width, machine height clearance, turning space, ramps and floor conditions.
- Map the lifting geometry: calculate the required vertical height and horizontal working radius from the planned crane position.
- Verify setup conditions: check outrigger clearance, ground-bearing capacity, ventilation and surrounding hazards.
- Review the load chart: confirm that the selected crane can handle the planned load in the required configuration with an appropriate operating margin.
Frequently asked questions
Is a 2-ton spider crane always better than a 1.2-ton or 1.5-ton model?
No. A 2-ton model may offer additional nominal capacity, but the best choice depends on access dimensions, machine weight, working radius, lifting height, outrigger space and floor conditions. A smaller machine may be more suitable when access is the primary constraint.
Can the Onchtech 2-ton crane pass through a standard doorway?
The machine is 0.71 m wide, but doorway suitability must be confirmed from the actual clear opening. The complete route should also be checked for height, turning clearance, thresholds and other obstructions.
Can it lift 2 tonnes at a 6 m radius?
The 2-ton designation is the crane’s nominal capacity class; it does not mean that 2 tonnes can be lifted at every radius. Permitted load decreases according to lifting geometry and configuration. The applicable load chart must be checked before operation.
What information is needed for model selection?
Provide the load weight and size, required radius and height, access-route dimensions, available outrigger area, floor or ground conditions, power preference, destination market and any required optional equipment.
Match the crane to the complete lifting plan
Hunan Hongchang Machinery Co., Ltd. develops and manufactures Onchtech engineering equipment and supports OEM, ODM and OBM cooperation for international customers. For a spider crane recommendation, share your access dimensions, load information, required lifting height, working radius and jobsite conditions.
The final machine specification, options, compliance requirements and lifting configuration should be reviewed against the intended application before ordering or operation.
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