Metalmor Classic Ash Yacht Blocks from Meridian Zero
Metalmor Classic Ash Wooden Yacht Blocks combine the best aspects of traditional and modern design and production. Yacht Ash Blocks from Meridian Zero are manufactured from solid Ash, polished marine grade AISI316 stainless steel, high-strength white ertacetal thermoplastic resin sheaves and stainless steel axle pin.
The Classic Ash Yacht range of blocks is plain-bearing, intended for yachts up to approximately 14 metres in length overall.
The solid wood cheeks are glued and screwed, treated with tung oil and lacquer finished with a high gloss varnish.
The stainless steel axle pin is mounted with a Hex-Head bolt to prevent turning and facilitate removal for maintenance and repair.
Ertacetal thermoplastic resin has excellent mechanical properties for durable plain-bearing sheave performance:
- Tough and Solid
- Excellent creep resistance and dimensional stability
- Ideal for precision part machining
- Low co-efficient of friction
- Very good dielectric properties
Classic Ash Yacht Blocks are Plain Bearing which means:
- No ball bearings or roller bearings
- Simple construction with only one moving part, the least possible to construct a serviceable pulley
- Low maintenance
- The sheave rotates directly on a simple axle pin
- Sheave groove designed to handle rope sympathetically
- Cost effective - reasonably priced compared with a ball bearing or roller bearing block
- Excellent for high static loads
- Excellent all round, multi-purpose functionality
- Excellent working life – no bearings to be crushed and fall out
Classic Yacht Ash Block Options in three sizes 8-10mm, 10-12mm, and 12-14mm:
- Single, double, triple and fiddle (double in line) sheaves - fiddles are only available in the two larger sizes
- Bow (fixed head) or swivel head
- With or without becket
Metalmor Yacht Ash Blocks from Meridian Zero - Specifications:
Single Sheave
Block |
Rope Diameter |
Sheave Diameter |
MBL |
Weight |
Single Sheave |
8-10mm |
40mm |
300kg |
0.2kg |
Single Sheave |
10-12mm |
50mm |
350kg |
0.3kg |
Single Sheave |
12-14mm |
60mm |
400kg |
0.4kg |
Double Sheave
Block |
Rope Diameter |
Sheave Diameter |
MBL |
Weight |
Double Sheave |
8-10mm |
40mm |
350kg |
0.3kg |
Double Sheave |
10-12mm |
50mm |
400kg |
0.5kg |
Double Sheave |
12-14mm |
60mm |
440kg |
0.7kg |
Triple Sheave
Block |
Rope Diameter |
Sheave Diameter |
MBL |
Weight |
Triple Sheave |
8-10mm |
40mm |
400kg |
0.4kg |
Triple Sheave |
10-12mm |
50mm |
420kg |
0.7kg |
Triple Sheave |
12-14mm |
60mm |
460kg |
0.8kg |
Metalmor Yacht Ash Blocks from Meridian Zero - Dimensions:

Single Sheave
Block |
Rope Diameter |
A |
B |
C |
D |
E |
F |
G |
H |
J |
Single Sheave |
8-10mm |
78mm |
57mm |
46mm |
40mm |
12mm |
17mm |
14mm |
17mm |
6mm |
Single Sheave |
10-12mm |
90mm |
68mm |
48mm |
50mm |
13mm |
18mm |
16mm |
21mm |
8mm |
Single Sheave |
12-14mm |
104mm |
77mm |
54mm |
60mm |
13mm |
19mm |
18mm |
21mm |
8mm |
Double Sheave
Block |
Rope Diameter |
A |
B |
C |
D |
E |
F |
G |
H |
J |
Double Sheave |
8-10mm |
78mm |
57mm |
72mm |
40mm |
17mm |
21mm |
14mm |
17mm |
8mm |
Double Sheave |
10-12mm |
90mm |
68mm |
76mm |
50mm |
18mm |
24mm |
16mm |
21mm |
10mm |
Double Sheave |
12-14mm |
104mm |
77mm |
84mm |
60mm |
20mm |
25mm |
18mm |
21mm |
10mm |
Triple Sheave
Block |
Rope Diameter |
A |
B |
C |
D |
E |
F |
G |
H |
J |
Triple Sheave |
8-10mm |
78mm |
57mm |
98mm |
40mm |
42mm |
30mm |
14mm |
17mm |
10mm |
Triple Sheave |
10-12mm |
90mm |
68mm |
93mm |
50mm |
44mm |
30mm |
16mm |
21mm |
12mm |
Triple Sheave |
12-14mm |
104mm |
77mm |
114mm |
60mm |
48mm |
30mm |
18mm |
21mm |
12mm |
Metalmor Tall Ship Traditional Ash Yacht Blocks for yachts over 14 metres in length overall are also available - please enquire