Capacity:
Rated pulling force should be 25–30% higher than the calculated maximum pulling tension.
Check cable manufacturer’s maximum allowable pulling tension (usually based on conductor size and material).
Pulling Speed:
Adjustable speed is important (slow speed at start, higher later). Typical range: 10–90 m/min.
Control & Safety:
Should have a dynamometer or load indicator to monitor pulling tension.
Automatic shutoff if tension exceeds safe limit.
Power Source: Hydraulic or electric, depending on site conditions.
Size: Must suit the cable diameter (roller groove slightly larger than cable OD).
Strength: Rollers should handle the cable weight without deforming.
Spacing:
Typically every 2–3 meters in straight runs.
Closer (≤1 m) if cable is heavy or route has sharp bends.
Special Types:
Corner rollers at bends to reduce sidewall pressure.
Manhole/entry rollers to protect the cable at pit/trench edges.
Load Capacity: Must match or exceed the drum weight (cable + drum).
Drum Shaft: Heavy-duty steel shaft with bearings for smooth rotation.
Braking System: To control drum over-run when cable is being pulled.
Adjustability: Height and width adjustment depending on drum size.
Type: Hydraulic or ratchet cutters.
Capacity: Rated for the maximum conductor size (cross-section area in mm² or AWG) and material (copper or aluminum).
Cutting Quality: Clean cut without conductor strand damage.
Portability: Hand-held hydraulic cutters are common for large power cables.
Size Match: Choose grips according to cable outer diameter (OD).
Strength: Rated breaking strength should be higher than pulling tension.
Type:
Single-eye grips (common).
Double-eye or lace-up grips for long/heavy pulls.
Material: Usually galvanized steel or stainless steel wire mesh.
Swivel Joints: Installed between winch rope and cable grip to prevent cable twisting.
Lubricant: Use approved cable pulling lubricant to reduce friction in ducts.
Measuring Equipment: Dynamometer/tension meter, length counter.
Communication: Radios or signaling system between pulling and feeding ends.
✅ Step-by-Step Selection Approach
Get cable specs (diameter, weight, max pulling tension, bend radius).
Assess route conditions (duct, trench, bends, manholes, length).
Calculate expected pulling tension and compare with equipment ratings.
Choose machines and tools with safe working margin (≥25–30% above requirement).
Ensure all accessories (rollers, grips, lubricants) are compatible with cable size and weight.
Capacity:
Rated pulling force should be 25–30% higher than the calculated maximum pulling tension.
Check cable manufacturer’s maximum allowable pulling tension (usually based on conductor size and material).
Pulling Speed:
Adjustable speed is important (slow speed at start, higher later). Typical range: 10–90 m/min.
Control & Safety:
Should have a dynamometer or load indicator to monitor pulling tension.
Automatic shutoff if tension exceeds safe limit.
Power Source: Hydraulic or electric, depending on site conditions.
Size: Must suit the cable diameter (roller groove slightly larger than cable OD).
Strength: Rollers should handle the cable weight without deforming.
Spacing:
Typically every 2–3 meters in straight runs.
Closer (≤1 m) if cable is heavy or route has sharp bends.
Special Types:
Corner rollers at bends to reduce sidewall pressure.
Manhole/entry rollers to protect the cable at pit/trench edges.
Load Capacity: Must match or exceed the drum weight (cable + drum).
Drum Shaft: Heavy-duty steel shaft with bearings for smooth rotation.
Braking System: To control drum over-run when cable is being pulled.
Adjustability: Height and width adjustment depending on drum size.
Type: Hydraulic or ratchet cutters.
Capacity: Rated for the maximum conductor size (cross-section area in mm² or AWG) and material (copper or aluminum).
Cutting Quality: Clean cut without conductor strand damage.
Portability: Hand-held hydraulic cutters are common for large power cables.
Size Match: Choose grips according to cable outer diameter (OD).
Strength: Rated breaking strength should be higher than pulling tension.
Type:
Single-eye grips (common).
Double-eye or lace-up grips for long/heavy pulls.
Material: Usually galvanized steel or stainless steel wire mesh.
Swivel Joints: Installed between winch rope and cable grip to prevent cable twisting.
Lubricant: Use approved cable pulling lubricant to reduce friction in ducts.
Measuring Equipment: Dynamometer/tension meter, length counter.
Communication: Radios or signaling system between pulling and feeding ends.
✅ Step-by-Step Selection Approach
Get cable specs (diameter, weight, max pulling tension, bend radius).
Assess route conditions (duct, trench, bends, manholes, length).
Calculate expected pulling tension and compare with equipment ratings.
Choose machines and tools with safe working margin (≥25–30% above requirement).
Ensure all accessories (rollers, grips, lubricants) are compatible with cable size and weight.
