Linear Rail Plugs | McMaster-Carr

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Rail Width

Carriage Width

Carriage Profile

Carriage Length

Overall Height

Number of Mounting Holes

Load Fastening

From Bottom

From Top

Dynamic Load Capacity

Less than 1,000 lb.

1,000 lb. to 1,999 lb.

2,000 lb. to 3,999 lb.

4,000 lb. to 9,999 lb.

10,000 lb. or greater

Mounting Hole Thread Size

Carriage Material

Material

Height

Thread Size

Static Load Capacity

1,000 lb. to 1,999 lb.

2,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

20,000 lb. or greater

Bearing Material

Stainless Steel

Steel

Static Pitch Moment Load Capacity

Less than 50 ft·lbf

50 ft·lbf to 99 ft·lbf

100 ft·lbf to 249 ft·lbf

250 ft·lbf to 499 ft·lbf

500 ft·lbf or greater

Mounting Hole Depth

End Seal Material

Export Control Classification Number (ECCN)

EAR99

RoHS

Compliant

Compliant with Exemptions

DFARS Specialty Metals

Exempt

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Static Roll Moment Load Capacity

Less than 100 ft·lbf

100 ft·lbf to 249 ft·lbf

250 ft·lbf to 499 ft·lbf

500 ft·lbf to 999 ft·lbf

1,000 ft·lbf or greater

Lubricant

Grease with Aluminum Thickener

Grease with Lithium Thickener

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100 Products

About Moment Loads

Standard Carriage

Flanged Carriage

Hand Brake Shown Installed

Guide Rail

Hand Brake

Designed for use on horizontal surfaces, the contact angle of the ball bearings on the rail allows these carriages to last longer than other carriages. The ball bearings provide accurate movement and positioning at high speeds under heavy loads. End seals keep lubricant in and dirt out. Add guide rail bellows to protect rails from contaminants as carriages move across them.

Standard carriages are narrower than flanged carriages, making them better for confined spaces.

Flanged carriages have through-holes for access when fastening loads.

Add a hand brake to lock carriages in position. To install, fasten the brake to the same mounting surface as your carriage.

Mounting hole plugs protect mounting fasteners from corrosion.

Standard Carriages and Guide Rails

Load Fastening from Top

For made-to-order guide rails, please specify the length (in 1 mm increments). The mounting holes will be centered along the rail.

Steel Carriages							Steel Guide Rails			Made-to-Order Steel Guide Rails			Hand Brakes		Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each		Each
Load Fastening From Top
15	3,100	24	34	57	6250K18	0000000	220; 460; 820; 1,600	6250K1	00000	160-1,600	6250K33	00000	1685N1	0000000	6709K1	00000
20	4,300	28	42	66	6250K32	000000	280; 460; 820; 1,240	6250K2	000	220-2,500	6250K34	000	1685N8	000000	6709K3	000
23	6,900	33	48	83	6250K42	000000	280; 460; 820; 1,600	6250K3	000	220-2,500	6250K39	000	1685N12	000000	6709K4	000
28	10,250	42	60	97	6250K52	000000	440; 600; 1,000; 1,640	6250K4	000	280-2,500	6250K43	000	1685N17	000000	6709K4	000
34	13,550	48	70	111	6250K62	000000	440; 760; 1,000; 1,640	6250K7	000	280-2,500	6250K44	000	1685N25	000000	6709K5	0000
45	18,050	60	86	126	6250K72	000000	570; 885; 1,200; 1,620	6250K6	000	570-2,500	6250K49	000	1685N28	000000	6709K6	0000
48	30,550	68	100	156	6250K82	000000	780; 1,020; 1,500; 1,980	6250K9	000	780-2,500	6250K53	000	1685N39	000000	6709K7	0000

Flanged Carriages and Guide Rails

Load Fastening from Bottom

For made-to-order guide rails, please specify the length (in 1 mm increments). The mounting holes will be centered along the rail.

Steel Carriages							Steel Guide Rails			Made-to-Order Steel Guide Rails			Hand Brakes		Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each		Each
Load Fastening From Bottom
15	3,100	24	52	57	6250K19	0000000	220; 460; 820; 1,600	6250K1	00000	160-1,600	6250K33	00000	1685N1	0000000	6709K1	00000
20	4,300	28	59	66	6250K37	000000	280; 460; 820; 1,240	6250K2	000	220-2,500	6250K34	000	1685N8	000000	6709K3	000
23	6,900	33	73	83	6250K47	000000	280; 460; 820; 1,600	6250K3	000	220-2,500	6250K39	000	1685N12	000000	6709K4	000
28	10,250	42	90	97	6250K57	000000	440; 600; 1,000; 1,640	6250K4	000	280-2,500	6250K43	000	1685N17	000000	6709K4	000
34	13,550	48	100	111	6250K67	000000	440; 760; 1,000; 1,640	6250K7	000	280-2,500	6250K44	000	1685N25	000000	6709K5	0000
45	18,050	60	120	126	6250K77	000000	570; 885; 1,200; 1,620	6250K6	000	570-2,500	6250K49	000	1685N28	000000	6709K6	0000
48	30,550	68	140	156	6250K87	000000	780; 1,020; 1,500; 1,980	6250K9	000	780-2,500	6250K53	000	1685N39	000000	6709K7	0000

Corrosion-Resistant Ball Bearing Carriages and Guide Rails

Standard Carriage

Load Fastening from Top

Guide Rail

Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Mount in any orientation without affecting load capacity. End seals keep lubricant in and dirt out. Add guide rail bellows to protect rails from contaminants as carriages move across them.

Standard carriages are narrower than flanged carriages, making them better for confined spaces.

For made-to-order guide rails, please specify the length of the rail (in 1 mm increments).

Mounting hole plugs protect mounting fasteners from corrosion.

Note: Each carriage can only be used with its corresponding guide rail.

Standard Carriages and Guide Rails

440 Stainless Steel Carriages							440 Stainless Steel Guide Rails			Made-to-Order 440 Stainless Steel Guide Rails			Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each
Load Fastening From Top
20	2,300	28	42	76	5708K21	0000000	280; 500; 1,000; 1,480	5708K86	00000	140-3,600	5708K152	00000	5708K102	00000
23	3,900	33	48	92	5708K22	000000	280; 500; 1,000; 1,480	5708K87	000	142-3,600	5708K153	000	5708K103	000
28	5,650	42	60	108	5708K23	000000	500; 760; 1,000; 2,000	5708K88	000	184-3,600	5708K154	000	5708K103	000
34	8,450	48	70	121	5708K24	000000	500; 760; 1,000; 2,000	5708K89	000	184-3,600	5708K155	0000	5708K104	000

Clean Room Ball Bearing Carriages and Guide Rails

Standard Carriage

Load Fastening from Top

Guide Rail

Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Mount in any orientation without affecting load capacity. End seals keep lubricant in and dirt out.

Standard carriages are narrower than flanged carriages, making them better for confined spaces.

Add mounting hole plugs to protect mounting fasteners from corrosion.

For made-to-order guide rails, please specify the length of the rail (in 1 mm increments). The mounting holes will be centered along the rail.

Standard Carriages and Guide Rails

440 Stainless Steel Carriages								440 Stainless Steel Guide Rails			Made-to-Order 440 Stainless Steel Guide Rails			Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm	Environmental Rating		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each
Load Fastening From Top
9	260	10	20	21.5	Fed. Std. Class 1,000; ISO Class 6	6725K608	0000000	80; 160; 220; 280	6725K43	00000	40-840	6725K93	00000	6725K612	00000
9	400	10	20	30	Fed. Std. Class 1,000; ISO Class 6	6725K3	000000	80; 160; 220; 280	6725K43	000	40-840	6725K93	000	6725K612	0000
9	530	10	20	40.5	Fed. Std. Class 1,000; ISO Class 6	6725K602	000000	80; 160; 220; 280	6725K43	000	40-840	6725K93	000	6725K612	0000
12	490	13	27	25	Fed. Std. Class 1,000; ISO Class 6	6725K609	000000	150; 200; 350; 475	6725K53	000	50-975	6725K94	000	6725K613	0000
12	740	13	27	34	Fed. Std. Class 1,000; ISO Class 6	6725K4	000000	150; 200; 350; 475	6725K53	000	50-975	6725K94	000	6725K613	0000
12	960	13	27	44	Fed. Std. Class 1,000; ISO Class 6	6725K603	000000	150; 200; 350; 475	6725K53	000	50-975	6725K94	000	6725K613	0000
15	780	16	32	32	Fed. Std. Class 1,000; ISO Class 6	6725K61	000000	160; 240; 560; 680	6725K63	000	80-960	6725K95	000	6725K613	0000
15	1,100	16	32	42	Fed. Std. Class 1,000; ISO Class 6	6725K5	000000	160; 240; 560; 680	6725K63	000	80-960	6725K95	000	6725K613	0000
15	1,450	16	32	57	Fed. Std. Class 1,000; ISO Class 6	6725K604	000000	160; 240; 560; 680	6725K63	000	80-960	6725K95	000	6725K613	0000
20	1,000	20	40	38	Fed. Std. Class 1,000; ISO Class 6	6725K611	000000	240; 480; 660; 840	6725K73	000	120-900	6725K96	000	6725K614	0000
20	1,450	20	40	50	Fed. Std. Class 1,000; ISO Class 6	6725K6	000000	240; 480; 660; 840	6725K73	000	120-900	6725K96	000	6725K614	0000
20	1,900	20	40	68	Fed. Std. Class 1,000; ISO Class 6	6725K605	000000	240; 480; 660; 840	6725K73	000	120-900	6725K96	000	6725K614	0000

Horizontal-Mount Quiet-Ride Ball Bearing Carriages and Guide Rails

Standard Carriage

Flanged Carriage

Load Fastening from Top

Load Fastening from Bottom

Hand Brake Shown Installed

Guide Rail

Hand Brake

Designed for use on horizontal surfaces, the contact angle of the ball bearings on the rail allows these carriages to last longer than other carriages. The ball bearings operate with less friction than sleeve and roller bearing carriages to provide accurate movement and positioning at high speeds under heavy loads. However, they’re worse than sleeve bearings in dusty and wet environments. A plastic cage separates the ball bearings to minimize noise, reduce heat buildup, and eliminate ball collisions. End seals keep lubricant in and dirt out.

Flanged carriages have mounting holes on the flanges rather than the carriage body, so you can fasten loads from both the top and bottom.

For made-to-order guide rails, please specify the length of the rail (in 1 mm increments). The mounting holes will be centered along the rail.

Add a hand brake to lock carriages in position. To install, fasten the brake to the same mounting surface as your carriage.

Mounting hole plugs protect mounting fasteners from corrosion.

Standard Carriages and Guide Rails

Steel Carriages							Steel Guide Rails			Made-to-Order Steel Guide Rails			Hand Brakes		Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each		Each
Load Fastening From Top
15	3,300	24	34	57	6713K11	0000000	220; 460; 820; 1,600	6250K1	00000	160-1,600	6250K33	00000	1685N1	0000000	6709K1	00000
20	4,400	28	42	67	6713K12	000000	280; 460; 820; 1,240	6250K2	000	220-2,500	6250K34	000	1685N8	000000	6709K3	000
28	10,450	42	60	97	6713K14	000000	440; 600; 1,000; 1,640	6250K4	000	280-2,500	6250K43	000	1685N17	000000	6709K4	000
34	14,500	48	70	111	6713K15	000000	440; 760; 1,000; 1,640	6250K7	000	280-2,500	6250K44	000	1685N25	000000	6709K5	0000

Flanged Carriages and Guide Rails

Steel Carriages							Steel Guide Rails			Made-to-Order Steel Guide Rails			Hand Brakes		Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm	Rail Lengths, mm		Per mm		Each		Each
Load Fastening From Top and From Bottom
15	3,300	24	52	57	6713K101	0000000	220; 460; 820; 1,600	6250K1	00000	160-1,600	6250K33	00000	1685N1	0000000	6709K1	00000
23	7,050	33	73	83	6713K102	000000	280; 460; 820; 1,600	6250K3	000	220-2,500	6250K39	000	1685N12	000000	______	00

Corrosion-Resistant Maintenance-Free Ball Bearing Carriages and Guide Rails

Carriage

Load Fastening from Top

Guide Rail

Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. An internal reservoir continuously supplies grease for maintenance-free operation, making them great for hard-to-reach places. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Mount in any orientation without affecting load capacity. End seals keep lubricant in and dirt out.

Mounting hole plugs protect mounting fasteners from corrosion.

410 Stainless Steel Carriages and Guide Rails

Carriages							Guide Rails			Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm		Each
Load Fastening From Top
15	1,750	24	34	58	9184T71	0000000	160; 280; 460; 820	9184T61	00000	9184T81	00000
20	4,200	30	44	75	9184T72	000000	280; 500; 1,000; 1,480	9184T62	000	9184T82	000
23	5,100	36	48	86	9184T73	000000	280; 500; 1,000; 1,480	9184T63	000	9184T83	000
28	7,100	42	60	98	9184T74	000000	500; 760; 1,000; 2,000	9184T64	000	9184T84	000
34	9,400	48	70	111	9184T75	000000	500; 760; 1,000; 2,000	9184T65	000	9184T84	000

440 Stainless Steel Carriages and Guide Rails

Carriages							Guide Rails			Mounting Hole Plugs
For Rail Wd., mm	Dynamic Load Cap., lbs.	O'all Ht., mm	Carriage Wd., mm	Carriage Lg., mm		Each	Rail Lengths, mm		Per mm		Each
Load Fastening From Top
12	740	13	27	34	9184T713	0000000	150; 200; 350; 475	6725K53	00000	6725K613	00000

About Moment Loads

Horizontal-Mount Ball Bearing Carriages and Guide Rails

Corrosion-Resistant Ball Bearing Carriages and Guide Rails

Clean Room Ball Bearing Carriages and Guide Rails

Horizontal-Mount Quiet-Ride Ball Bearing Carriages and Guide Rails

Corrosion-Resistant Maintenance-Free Ball Bearing Carriages and Guide Rails