Wichard Ball Bearing Block Single w/ Swivel Head

WICHARD SINGLE BALL BEARING BLOCKS - SWIVEL HEAD

• Complete range of ball bearing blocks
• Modern design
• Innovative design with two lateral races of ball bearings
• Smooth running for low load adnhigh speed action
• Under high load the hub runs on stainless steel bush which allows the sheave to run freely
• Light cheeks protecting the sheave
• Wide choice of fastenings thanks to the universal head
• The sheave can be removed for maintenance (71105)

APPLICATIONS

• Part no. 71105: 
• For dinghies and catamarans applications: genoa sheets, boom vang, footmast block, masthead block
• For larger yachts: barber-hauler, various, control lines
• Part nos. 72105-75105:
• Mainsail systems and travelers
• Spinnaker sheets
• Genoa sheets
• Running backstays

MATERIALS

• Part no. 71105:
• Grade 316L stainless steel head
• Delrin® ball bearings
• configuration
• Grade 316L stainless steel load straps
• Polycarbonate cheeks
• Composite sheave
• Part nos. 72105-75105:
• Grade 316L stainless steel head configuration
• Grade 316L stainless steel load straps
• POM cheeks
• Delrin® ball bearings
• Composite saddle for cam models
• Composite sheave
• Terminal (shackle i.e.): 316L stainless steel grade

SPECIFICATIONS

Part no. 71105: Single ball bearing block - Sheave 25 - Swivel head

• Rope size: 6
• Length (mm): 64
• Width (mm): 25
• Thickness (mm): 18
• Sheave diameter (mm): 25
• Working load (kg): 200
• Breaking load (kg): 500
• Weight (g): 27

Part no. 72105: Single ball bearing block - Sheave 35 - Swivel head

• Rope size: 8
• Length (mm): 84
• Width (mm): 37
• Thickness (mm): 23
• Sheave diameter (mm): 35
• Schackle diameter (mm): 5
• Working load (kg): 320
• Breaking load (kg): 900
• Weight (g): 70

Part no. 73105: Single ball bearing block - Sheave 45 - Swivel head

• Rope size: 10
• Length (mm): 97
• Width (mm): 49
• Thickness (mm): 26
• Sheave diameter (mm): 45
• Schackle diameter (mm): 5
• Working load (kg): 400
• Breaking load (kg): 900
• Weight (g): 105

Part no. 74105: Single ball bearing block - Sheave 55 - Swivel head

• Rope size: 12
• Length (mm): 119
• Width (mm): 63
• Thickness (mm): 29
• Sheave diameter (mm): 55
• Schackle diameter (mm): 6
• Working load (kg): 720
• Breaking load (kg): 1500
• Weight (g): 179

Part no. 75105: Single ball bearing block - Sheave 70 - Swivel head

• Rope size: 14
• Length (mm): 153
• Width (mm): 80
• Thickness (mm): 38
• Sheave diameter (mm): 70
• Schackle diameter (mm): 8
• Working load (kg): 1200
• Breaking load (kg): 2700
• Weight (g): 367