Wichard Ball Bearing Block Single Cheek

WICHARD SINGLE BALL BEARING BLOCKS - CHEEK BLOCK

• Complete range of ball bearing blocks
• Modern design
• Innovative design with two lateral races of ball bearings
• Smooth running for low load and high 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 (70120/71120)

APPLICATIONS

• Part nos. 70120 & 71120:
• For dinghies and catamarans applications: genoa sheets, boom vang, footmast block, masthead block…
• For larger yachts: barber-hauler, various, control lines
• Part nos. 72120-75120:
• Cheek blocks applications for genoa sheets

MATERIALS

• Part nos. 70120 & 71120:
• Grade 316L stainless steel head
• Delrin® ball bearings
• configuration
• Grade 316L stainless steel load straps
• Polycarbonate cheeks
• Composite sheave
• Part nos. 72120-75120:
• 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. 70120: Single ball bearing block - Sheave 18 - cheek block

• Rope size: 4
• Length (mm): 36
• Width (mm): 18
• Thickness (mm): 14
• Sheave diameter (mm): 18
• Working load (kg): 240
• Breaking load (kg): 500
• Weight (g): 10

Part no. 71120: Single ball bearing block - Sheave 25 - Cheek block

• Rope size: 6
• Length (mm): 52
• Width (mm): 25
• Thickness (mm): 18
• Sheave diameter (mm): 25
• Working load (kg): 320
• Breaking load (kg): 600
• Weight (g): 21

Part no. 72120: Single ball bearing block - Sheave 35 - Cheek block M6

• Rope size: 8
• Length (mm): 52
• Width (mm): 37
• Thickness (mm): 20
• Sheave diameter (mm): 35
• Working load (kg): 320
• WLL (g): 44
• Breaking load (kg): 900

Part no. 73120: Single ball bearing block - Sheave 45 - Cheek block M6

• Rope size: 10
• Length (mm): 65
• Width (mm): 49
• Thickness (mm): 23
• Sheave diameter (mm): 45
• Working load (kg): 400
• Breaking load (kg): 900
• Weight (g): 73

Part no. 74120: Single ball bearing block - Sheave 55 - Cheek block M6

• Rope size: 12
• Length (mm): 81
• Width (mm): 63
• Thickness (mm): 26
• Sheave diameter (mm): 55
• Working load (kg): 720
• Breaking load (kg): 1500
• Weight (g): 123

Part no. 75120: Single ball bearing block - Sheave 70 - Cheek block - M8

• Rope size: 14
• Length (mm): 103
• Width (mm): 80
• Thickness (mm): 34
• Sheave diameter (mm): 70
• Working load (kg): 1200
• Breaking load (kg): 2700
• Weight (g): 294