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Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com        Ordering/Questions

Cheek Blocks


Cheek Blocks
Cheek Blocks (Cheekblocks) or Turning Blocks are designed to be attached to a flat surface, allowing the line to run parallel to that surface. Mounted on the Deck, they are used as sheet and Foot Blocks, and as Deck Organizer Blocks. Mounted on a Spar, they are used for Halyards and Reef lines, some are designed specifically for mounting on curved surfaces. Cheek Blocks generally allow the line to turn at angles up to 180°. Often available in single and double versions, and sometimes with an integral (or separate) angle pad or Jammer.
See also: Foot Blocks, Deck Organizer Blocks, Halyard Lead Blocks and other Blocks.

Rig-Rite stocks a large selection of Cheek Blocks from a variety of manufacturers, many are listed here. For Cheek Blocks not listed here, please contact us with complete information, including Manufacturer's part number or a sketch or photo of the item(s) with dimensions.
 

Cheek Blocks for Flat Surfaces
    - Schaefer Cheek Blocks
    - Ronstan Cheek Blocks
    - Kenyon Cheek Blocks
    - Sparcraft Cheek Blocks

Cheek Blocks for Curved Surfaces
 


Cheek Blocks for Flat Surfaces
 


Schaefer Cheek Blocks for Flat Surfaces
Schaefer Blocks are well known for their strength and durability. Smaller versions with an integral curved base are also available, See Cheek Blocks for Curved Surfaces, below.
 

SS Cheek Block w/ 1 7/16" Delrin Sheave: Sch 30-27:
Black Cheek Block w/ 1 7/16" Delrin Sheave: Sch 303-09:
Black Cheek Block w/ 1 7/16" Delrin Sheaves - Double: Sch 303-29:

Stainless Steel 03 Series Cheek Block features 1 7/16" (37mm) Delrin Sheave with SS or Black Aluminum Top plate. SS Base is 2 7/8" long x (maximum) 1 3/4" wide, unit is 3/4" high (Double version is 1 7/16" high), and attaches to deck with (4) 3/16" (#10) RH screws. Suitable for use with up to 7/16" line, safe working load is 1000 lbs. (Double version Upper Sheave has 200 lbs. SWL).

 

 

SS Cheek Block w/ 2" Delrin Sheave: Sch 505-11:
SS Cheek Block w/ 2" Aluminum Sheave: Sch 505-10:

Stainless Steel 05 Series Cheek Block features 2" (51mm) Sheave with Stainless Steel Top plate. SS Base is 3 5/8" long x 2 1/4" wide, unit is 7/8" high and attaches to deck with (4) 3/16" (#10) RH screws. Suitable for use with up to 7/16" line, safe working load is 1750 lbs..

 

 

Black Cheek Block w/ 2" Delrin Sheave: Sch 504-11:
Black Cheek Block w/ 2" Aluminum Sheave: Sch 504-10:

Stainless Steel 05 Series Cheek Block features 2" (51mm) Sheave with Black Aluminum Top plate. SS Base is 3 5/8" long x 2 1/4" wide, unit is 7/8" high and attaches to deck with (4) 3/16" (#10) RH screws. Suitable for use with up to 7/16" line, safe working load is 1750 lbs..

 

SS Cheek Block w/ 2" Delrin Sheaves - Double: Sch 505-28:
Black Cheek Block w/ 2" Delrin Sheaves - Double: Sch 504-28:

Stainless Steel 05 Series Double Cheek Block features 2" (51mm) Delrin Sheaves with SS or Black Aluminum Top plate. SS Base is 3 5/8" long x 2 1/4" wide, unit is 1 3/4" high and attaches to deck with (4) 3/16" (#10) RH screws. Suitable for use with up to 7/16" line, safe working load is 1750 lbs. (Lower Sheave) and 350 lbs. (Upper Sheave).

 

 

05 Cheek Block Base Pad Adapter - Plastic: Sch 55-60:

 

 

Cheek Block Base Pad adapts Flat Base 05 Series Cheek Blocks to fit curved Spars. Black molded PVC Base Pad is 3 5/8" long x (maximum) 2 1/4" wide, and is drilled for use with all Schaefer 504 and 505 Series Cheek Blocks, above.

 


SS Cheek Block w/ 2 3/8" Delrin Sheave: Sch 705-11:
SS Cheek Block w/ 2 3/8" Aluminum Sheave: Sch 705-10:

Stainless Steel 07 Series Cheek Block features 2 3/8" (60mm) Sheave with Stainless Steel Top plate. SS Base is 4 3/8" long x 2 3/4" wide, unit is 7/8" high and attaches to deck with (4) 1/4" RH screws. Suitable for use with up to 1/2" line, safe working load is 2250 lbs..

 

 

Black Cheek Block w/ 2 3/8" Delrin Sheave: Sch 704-11:
Black Cheek Block w/ 2 3/8" Aluminum Sheave: Sch 704-10:

Stainless Steel 07 Series Cheek Block features 2 3/8" (60mm) Sheave with Black Aluminum Top plate. SS Base is 4 3/8" long x 2 3/4" wide, unit is 7/8" high and attaches to deck with (4) 1/4" RH screws. Suitable for use with up to 1/2" line, safe working load is 2250 lbs..

 

SS Cheek Block w/ 2 3/8" Delrin Sheaves - Double: Sch 705-28:
Black Cheek Block w/ 2 3/8" Delrin Sheaves - Double: Sch 704-28:

Stainless Steel 07 Series Double Cheek Block features 2 3/8" (60mm) Delrin Sheaves with SS or Black Aluminum Top plate. SS Base is 4 3/8" long x 2 3/4" wide, unit is 7/8" high and attaches to deck with (4) 1/4" RH screws. Suitable for use with up to 1/2" line, safe working load is 2250 lbs. (Lower Sheave) and 500 lbs. (Upper Sheave).

 

 

 

 

07 Cheek Block - Backing Plate: Sch 705-11BP:
Stainless Steel Backing Plate for all 07 Series Cheek Blocks. SS Plate is 4 3/8" long x (maximum) 2 3/4" wide x 1/8" thick, and is drilled for use with all Schaefer 704 and 705 Series Cheek Blocks, above.

 

 

 

 

07 Cheek Block Base Pad Adapter - Plastic: Sch 55-61:
Cheek Block Base Pad adapts Flat Base 07 Series Cheek Blocks to fit curved Spars. Black molded PVC Base Pad is 4 3/8" long x (maximum) 2 3/4" wide, and is drilled for use with all Schaefer 704 and 705 Series Cheek Blocks, above.

 

 

 

07 Cheek Block Base Pad Adapter - Aluminum: Sch 55-61A:
Cheek Block Base Pad adapts Flat Base 07 Series Cheek Blocks to fit curved Spars. Cast, clear anodized Aluminum Base Pad is 4 3/8" long x (maximum) 2 3/4" wide, and is drilled for use with all Schaefer 704 and 705 Series Cheek Blocks, above. Also suitable for use in welded applications.

 

 

 

07 Cheek Block Base Pad Adapter - Aluminum, White: Sch 55-61AW:

 

 

Cheek Block Base Pad adapts Flat Base 07 Series Cheek Blocks to fit curved Spars. Cast, White Awlgrip painted Aluminum Base Pad is 4 3/8" long x (maximum) 2 3/4" wide, and is drilled for use with all Schaefer 704 and 705 Series Cheek Blocks, above.

 

 

SS Cheek Block w/ 3 1/4" Aluminum Sheave: Sch 10-10X:

Stainless Steel 10 Series Cheek Block features 3 1/4" (82mm) Aluminum Sheave with Stainless Steel Top plate. SS Base is 5 3/4" long x 3 3/4" wide, unit is 1 1/4" high and attaches to deck with (4) 1/4" FH screws on 4 3/4" x 2 3/4" centers. Suitable for use with up to 3/4" line, safe working load is lbs..   37-30X

 

 

10 Cheek Block Base Replacement Sheave - Aluminum: PP-S13AR12-B14X:

 

 

Replacement Aluminum Sheave for Schaefer Series 10 and 11 Cheek Blocks. Sheave is 3 1/4" OD x 3/4" wide x 7/8" ID.

 

 

Ronstan Cheek Blocks for Flat Surfaces
Ronstan Cheek Blocks are found on boats built around the world. Many other versions are available, contact us with details.
 

Black SS Cheek Block w/ 2 3/8" Delrin Sheave: RF 871X:

Stainless Steel Cheek Block features 2 3/8" (60mm) Delrin Sheave with Black SS Top plate. Rectangular SS Base is 3 7/8" long x 2 5/8" wide, unit is 1" high and attaches to deck with (4) 1/4" RH screws. Suitable for use with up to 5/8" line, safe working load is  lbs..

 

Black SS Cheek Block w/ 2 3/8" Delrin Sheaves - Double: RF 879X:

Stainless Steel Cheek Block features 2 3/8" (60mm) Delrin Sheaves with Black SS Top plate. Rectangular SS Base is 3 7/8" long x 2 5/8" wide, unit is 1 7/8" high and attaches to deck with (4) 1/4" RH screws. Suitable for use with up to 5/8" line.

 

Black SS Cheek Block w/ 2 3/8" Delrin Sheave - Special: RF 879X-IPS:

Stainless Steel Cheek Block features elevated 2 3/8" (60mm) Delrin Sheave with Black SS Top plate. Unit is as RF 879X, above, but lower Sheave is replaced with a large fixed spacer, allowing the strength of the Single Block, RF 871X, at twice the height above Deck. Rectangular SS Base is 3 7/8" long x 2 5/8" wide, unit is 1 7/8" high and attaches to deck with (4) 1/4" RH screws and (2) 5/16" (8mm) RH screws or bolts (Purchase separately). Suitable for use with up to 5/8" line. Special as used on Island Packet. 1020-68

 


Kenyon Cheek Blocks for Flat Surfaces
Commonly used on Kenyon 1 1/4" Traveller Systems and in other applications. Smaller blocks with an integral curved base are also available, See Cheek Blocks for Curved Surfaces, below.
 

SS Cheek Block w/ 1 7/8" Delrin Sheave: K-2030:
Stainless Steel Cheek Block with 1 7/8" OD Sheave mounts with (2) 1/4" screws on 1 9/16" centers. Block is (maximum) 2 13/16" long x 2" wide x 3/4" high, and is suitable for line up to 7/16" diameter.

 

SS Cheek Block w/ 1 7/8" Delrin Sheaves - Double: K-2030-2:
Stainless Steel Double Cheek Block with 1 7/8" OD Sheaves mounts with (2) 1/4" RH screws on 1 9/16" centers. Block is (maximum) 2 13/16" long x 2" wide x 1 3/8" high, and is suitable for line up to 7/16" diameter.

 


Sparcraft Cheek Blocks
Fairlead Cheek Blocks are commonly used on the Mast or Boom, to redirect Halyards or Reef lines. See also, Sparcraft Halyard Fairleads & Spectacles.
 

Fairlead Block - 40mm: FSP 48-401:
Fairlead Cheek Block is commonly used on Isomat and Sparcraft Masts to redirect Reef lines and Halyards. Block has a 40mm (1 9/16") turned delrin Sheave and Aluminum cheeks. Unit is 73mm (2 7/8") long x 45mm (1 3/4") wide, and fastens with (3) 6mm FH screws. Formerly produced by FranceSpar, Block is also commonly used on Deck. Suitable for up to 14mm (9/16") line, Sheave is not replaceable in this one piece unit.

 


Cheek Blocks for Curved Surfaces
Originally designed for mounting on Spars for use with Halyards and Reef lines, these Cheek Blocks are suitable for use on a variety of curved surfaces. Note that curved Cheek Block Base Pad Adapters, above, are available to adapt Schaefer Series 05 and 07 Cheek Blocks to fit curved surfaces.
 

SS Cheek Block w/ 1 1/16" Delrin Sheave, Curved Base: K-140X:
Cheek Block with curved base is used on smaller Kenyon Booms for Outhaul and Reef lines. SS Cheek Block has 1 1/16" OD Delrin Sheave suitable for use with line up to 3/8" diameter. Base is 3 3/16" long x 7/8" wide, and fastens to spar with (4) 3/16" (#10) RH screws on 2 11/16" (horizontal) and 1/2" (vertical) centers.

 

 

 

SS Cheek Block w/ 1 1/16" Delrin Sheave, Curved Base: Sch 30-04:

Stainless Steel 02 Series Cheek Block features 1 1/16" (27mm) Delrin Sheave with Stainless Steel Top plate. Curved SS Base is 3 1/2" long x 1" wide, unit is 3/4" high and attaches to Spar with (4) 3/16" (#10) RH screws. Suitable for use with up to 5/16" line, safe working load is 900 lbs..

 

SS Cheek Block w/ 1 1/16" Delrin Sheave, Curved Base w/ Becket: Sch 30-04B:

Stainless Steel 02 Series Cheek Block with Becket is as Sch 30-04, above, but with an integral Becket.

 

 

SS Cheek Block w/ 1 1/16" Wire Sheave, Curved Base: Sch 02-20X:

Stainless Steel 02 Series Cheek Block features 1 1/16" (27mm) SS Sheave with Stainless Steel Top plate. Curved SS Base is 3 1/2" long x 1" wide, unit is 3/4" high and attaches to Spar with (4) 3/16" (#10) RH screws. Suitable for use with up to 1/8"" wire or 3/16" line, safe working load is 900 lbs..

 


SS Cheek Block w/ 1 7/16" Delrin Sheave, Curved Base: Sch 03-30:
Black Cheek Block w/ 1 7/16" Delrin Sheave, Curved Base: Sch 303-30:

Stainless Steel 03 Series Cheek Block features 1 7/16" (37mm) Delrin Sheave with SS or Black Aluminum Top plate. Curved SS Base is 3 3/4" long x 1" wide, unit is 3/4" high and attaches to Spar with (4) 3/16" (#10) RH screws. Suitable for use with up to 7/16" line, safe working load is 1000 lbs..

 

 

SS Cheek Block w/ 2" Delrin Sheave, Curved Base: Sch 04-30X:

Stainless Steel 04 Series Cheek Block features 2" (51mm) Delrin Sheave with SS Top plate. Curved SS Base is 4 9/16" long x 1 1/4" wide, unit is 5/8" high and attaches to Spar with (4) 3/16" (#10) RH screws on 4 1/8" x 3/4" centers. Suitable for use with up to 1/2" line.


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