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Factorio BlueprintsAll belt balancersFactorio 128 to 128 Balancer Blueprint

Factorio 128 to 128 Balancer Blueprint

The largest design in the collection: 128 belts evened out across 128 x 74 tiles with 544 splitters and 7,315 entities. Balanced, not throughput unlimited.

In-game render of the 128 to 128 balancer blueprint

In-game render of the 128 to 128 balancer blueprint

128 to 128 balancer for mixed underground tiers

128128
Input belts
128
Output belts
128
Balancer type
belt
Size (tiles, width x length)
128 x 74
Listed belt tiers
blueredyellow
Throughput unlimited
No
Input balanced
Yes
Output balanced
Yes
Entities in the blueprint
Express underground belts
2,916
Express transport belts
2,697
Underground belts
620
Express splitters
544
Fast underground belts
538
String exported by Factorio
2.0.69.0
Designer
raynquist

String exported by Factorio 2.0.69. Decoded and checked by this site; not test-imported in the game.

Is the 128 to 128 balancer throughput unlimited?

No. It is balanced: it draws evenly from every input and gives every output an equal share. It is not throughput unlimited, so when only some inputs are fed or some outputs are blocked, an internal bottleneck can keep the total below what the remaining belts could carry. That is fine where all belts run full; where they often do not, check the other layouts and nearby configurations for one marked throughput unlimited.

Belt tier note

This layout mixes express, fast and basic underground belts with express belts and splitters, and the collection lists no compatible tiers for it. Build it as given rather than swapping tiers, since the mix of underground types is part of the design.

The source lists no compatible tiers for this entry; it is built with blue, red, yellow belt entities.

Source
Book
Raynquist's Belt Balancers Fall 2025
Book folder
other balancers
Name in the book
128-128 balancer (128x72)
The book covers
1-1 to 9-9, plus some 10-x, 12-x, 16-16, 32-32, 64-64 and 128-128 configurations; lane balancers for 1, 2, 3, 4, 6 and 8 belts; yellow-belt alternates in a downgrades folder

128 to 128 balancer blueprint string

The string was exported from Factorio 2.0.69. Copy it, open the game and press Import string on the shortcut bar, then paste. This site decoded the string and checked the entities and size against the preview, but did not import it in the game.

Nearby balancer configurations

All belt balancers