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CWR Ronstan Series 30 Ball Bearing Orbit Block™ Single Becket Swivel Shackle Head P6345455CWR-55173 https://cdnimages.opentip.com/full/CWR/CWR-55173.jpg Ronstan Series 30 Ball Bearing Orbit Block™ Single Becket Swivel Shackle Head Manufacturer Part Number: RF35100Series 30 Ball Bearing Orbit Block™ - Single - Becket - Swivel Shackle HeadBall Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.Features:• Lightweight• Highest working load in its class• Secure, versatile and secure attachement• Low profile and compact• Ultra low profile thru-sheave becket• Low friction 2-stage ball bearing system provides consistent performance over the full working load rangeApplications:• Mainsheet systems and spinnaker sheets on dinghies to 5M(16\')• Halyard, vang and backstay applications on boats to 5M(16\')• Control line applications on larger yachtsMaterials:• Sheave: High compression strength carbon black Acetal• Ball Bearings: High compression strength Acetal• Frame/Cheeks: Toughened, glass fiber reinforced Nylon• Link: UV stabilized, multi-strand impregnated SK75 Dyneema®Specifications:Sheave Ø: 30mm(1-3/16\")Max. Rope Ø: 8mm(5/16\")M.W.L.: 300kg(660lbs)B. L.: 600kg(1,320lbs)Weight: 32g(1.1oz) 6345455 9316800404957 0.1000lbs 2.00 4.00 1.00
Ronstan
21.8300 2027-05-02 5 In Stock
customer review - by , October 10, 2025
5/ 5stars
5.0 out of 5 stars
customer review - by , July 7, 2025
5/ 5stars
To be used as a backup to manage the main sheet on my Hobie Outback's sail kit.
customer review - by , September 9, 2022
5/ 5stars
worked great , would buy again.
customer review - by , September 9, 2022
5/ 5stars
Great product
customer review - by , February 2, 2022
4/ 5stars
It's EXTREMELY tiny

Ronstan Series 30 Ball Bearing Orbit Block™ - Single - Becket - Swivel Shackle Head

stars Rating 5 | 5 reviews
Brand Ronstan
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UPC: 9316800404957
SKU: CWR-55173
Price: $21.83
Quantity:
5 In Stock
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Product Description

Manufacturer Part Number: RF35100

Series 30 Ball Bearing Orbit Block™ - Single - Becket - Swivel Shackle Head

Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options.
Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.

Features:

• Lightweight

• Highest working load in its class

• Secure, versatile and secure attachement

• Low profile and compact

• Ultra low profile thru-sheave becket

• Low friction 2-stage ball bearing system provides consistent performance over the full working load range

Applications:

• Mainsheet systems and spinnaker sheets on dinghies to 5M(16')

• Halyard, vang and backstay applications on boats to 5M(16')

• Control line applications on larger yachts

Materials:

• Sheave: High compression strength carbon black Acetal

• Ball Bearings: High compression strength Acetal

• Frame/Cheeks: Toughened, glass fiber reinforced Nylon

• Link: UV stabilized, multi-strand impregnated SK75 Dyneema®

Specifications:
Sheave Ø: 30mm(1-3/16")
Max. Rope Ø: 8mm(5/16")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 32g(1.1oz)

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
5 out of 5
5 stars
4
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1
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0
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0
1 stars
0
By IB
Date: October 14, 2025
5.0 out of 5 stars
Rating: 5 stars [5 of 5 Stars!]
By Greenskeeper
Date: July 22, 2025
To be used as a backup to manage the main sheet on my Hobie Outback's sail kit.
Rating: 5 stars [5 of 5 Stars!]
By mark l.
Date: September 26, 2022
worked great , would buy again.
Rating: 5 stars [5 of 5 Stars!]
By kaila12345
Date: September 13, 2022
Great product
Rating: 5 stars [5 of 5 Stars!]
By Aaron Huttner
Date: February 25, 2022
It's EXTREMELY tiny
Rating: 4 stars [4 of 5 Stars!]
Items 1 - 5 of 5 reviews
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