THK FBL51H Slide Rail (Medium-Load 3-Rail Double Slide)

THK FBL51H, FBL51H-P13, FBL51H-P14 are thin 3-rail double slides for long stroke under large loads (P13/P14: removable inner rail).

Key features

Roll-formed precision sheet rails for low-cost finite linear motion
Balls or bearings run between rails for smooth drawer-type extension
Standard rail lengths with fixed stroke per length (see rows)
Permissible loads given per set of two rails
Ordered by model and overall rail length, e.g. FBL51H +305L

Specifications

Series	FBL51H, FBL51H-P13, FBL51H-P14
Category	Medium-Load 3-Rail Double Slide
Code composition	Model + rail length (mm), e.g. FBL51H +305L
Rail lengths	305-762 mm (standard steps)
Load basis	Per set of 2 rails
Source	THK General Catalog Slide Rail (Korean ed. 515-2K), p. A13-29-A13-43

FBL51H		Type: Double, 3-rail \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
FBL51H +305L		Type: Double, 3-rail \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
FBL51H +356L		Type: Double, 3-rail \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
FBL51H +406L		Type: Double, 3-rail \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
FBL51H +457L		Type: Double, 3-rail \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
FBL51H +508L		Type: Double, 3-rail \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
FBL51H +559L		Type: Double, 3-rail \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
FBL51H +610L		Type: Double, 3-rail \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
FBL51H +660L		Type: Double, 3-rail \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
FBL51H +711L		Type: Double, 3-rail \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
FBL51H +762L		Type: Double, 3-rail \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set
FBL51H-P13		Type: Double, 3-rail, manual release \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
FBL51H-P13 +305L		Type: Double, 3-rail, manual release \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
FBL51H-P13 +356L		Type: Double, 3-rail, manual release \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
FBL51H-P13 +406L		Type: Double, 3-rail, manual release \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
FBL51H-P13 +457L		Type: Double, 3-rail, manual release \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
FBL51H-P13 +508L		Type: Double, 3-rail, manual release \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
FBL51H-P13 +559L		Type: Double, 3-rail, manual release \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
FBL51H-P13 +610L		Type: Double, 3-rail, manual release \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
FBL51H-P13 +660L		Type: Double, 3-rail, manual release \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
FBL51H-P13 +711L		Type: Double, 3-rail, manual release \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
FBL51H-P13 +762L		Type: Double, 3-rail, manual release \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set
FBL51H-P14		Type: Double, 3-rail, auto release \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
FBL51H-P14 +305L		Type: Double, 3-rail, auto release \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
FBL51H-P14 +356L		Type: Double, 3-rail, auto release \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
FBL51H-P14 +406L		Type: Double, 3-rail, auto release \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
FBL51H-P14 +457L		Type: Double, 3-rail, auto release \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
FBL51H-P14 +508L		Type: Double, 3-rail, auto release \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
FBL51H-P14 +559L		Type: Double, 3-rail, auto release \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
FBL51H-P14 +610L		Type: Double, 3-rail, auto release \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
FBL51H-P14 +660L		Type: Double, 3-rail, auto release \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
FBL51H-P14 +711L		Type: Double, 3-rail, auto release \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
FBL51H-P14 +762L		Type: Double, 3-rail, auto release \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set

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33 product codes available in this family

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THK FBL51H Slide Rail (Medium-Load 3-Rail Double Slide)

Brand THK·Slide Rails

Available part numbers (33)

FBL51H, FBL51H +305L, FBL51H +356L, FBL51H +406L, FBL51H +457L, FBL51H +508L, FBL51H +559L, FBL51H +610L, FBL51H +660L, FBL51H +711L + 23 more — see full table ↓

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Product codes & specifications

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	Product code	Spec
	FBL51H	Type: Double, 3-rail \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
	FBL51H +305L	Type: Double, 3-rail \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
	FBL51H +356L	Type: Double, 3-rail \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
	FBL51H +406L	Type: Double, 3-rail \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
	FBL51H +457L	Type: Double, 3-rail \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
	FBL51H +508L	Type: Double, 3-rail \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
	FBL51H +559L	Type: Double, 3-rail \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
	FBL51H +610L	Type: Double, 3-rail \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
	FBL51H +660L	Type: Double, 3-rail \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
	FBL51H +711L	Type: Double, 3-rail \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
	FBL51H +762L	Type: Double, 3-rail \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set
	FBL51H-P13	Type: Double, 3-rail, manual release \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
	FBL51H-P13 +305L	Type: Double, 3-rail, manual release \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
	FBL51H-P13 +356L	Type: Double, 3-rail, manual release \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
	FBL51H-P13 +406L	Type: Double, 3-rail, manual release \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
	FBL51H-P13 +457L	Type: Double, 3-rail, manual release \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
	FBL51H-P13 +508L	Type: Double, 3-rail, manual release \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
	FBL51H-P13 +559L	Type: Double, 3-rail, manual release \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
	FBL51H-P13 +610L	Type: Double, 3-rail, manual release \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
	FBL51H-P13 +660L	Type: Double, 3-rail, manual release \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
	FBL51H-P13 +711L	Type: Double, 3-rail, manual release \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
	FBL51H-P13 +762L	Type: Double, 3-rail, manual release \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set
	FBL51H-P14	Type: Double, 3-rail, auto release \| Rail length: Specify (+L) \| Stroke: Per rail length \| Load: —
	FBL51H-P14 +305L	Type: Double, 3-rail, auto release \| Rail length: 305 mm \| Stroke: 330 mm \| Load: 850 N/set
	FBL51H-P14 +356L	Type: Double, 3-rail, auto release \| Rail length: 356 mm \| Stroke: 381 mm \| Load: 820 N/set
	FBL51H-P14 +406L	Type: Double, 3-rail, auto release \| Rail length: 406 mm \| Stroke: 432 mm \| Load: 770 N/set
	FBL51H-P14 +457L	Type: Double, 3-rail, auto release \| Rail length: 457 mm \| Stroke: 483 mm \| Load: 730 N/set
	FBL51H-P14 +508L	Type: Double, 3-rail, auto release \| Rail length: 508 mm \| Stroke: 533 mm \| Load: 710 N/set
	FBL51H-P14 +559L	Type: Double, 3-rail, auto release \| Rail length: 559 mm \| Stroke: 584 mm \| Load: 690 N/set
	FBL51H-P14 +610L	Type: Double, 3-rail, auto release \| Rail length: 610 mm \| Stroke: 635 mm \| Load: 660 N/set
	FBL51H-P14 +660L	Type: Double, 3-rail, auto release \| Rail length: 660 mm \| Stroke: 686 mm \| Load: 630 N/set
	FBL51H-P14 +711L	Type: Double, 3-rail, auto release \| Rail length: 711 mm \| Stroke: 737 mm \| Load: 610 N/set
	FBL51H-P14 +762L	Type: Double, 3-rail, auto release \| Rail length: 762 mm \| Stroke: 787 mm \| Load: 580 N/set

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THK FBL51H Slide Rail (Medium-Load 3-Rail Double Slide)