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Beam Couplings

Ruland beam couplings, available through Pacific International Bearing Sales, are precision-engineered for high-performance motion control applications. Featuring a balanced, zero-backlash design with multiple spiral cuts, these couplings offer superior angular misalignment capabilities and reduced vibration at speeds up to 6,000 RPM. Manufactured from a single piece of aluminum or stainless steel, they provide enhanced torsional stiffness and flexibility compared to traditional single-beam designs. Ideal for use in encoders, tachometers, and light-duty power transmission, they come in inch, metric, and mixed bore sizes from 3/32" to 3/4" and 3mm to 20mm.

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Brand

Ruland (2497)

Length (L)

0.787 in (20.0 mm) (51)

0.866 in (22.0 mm) (30)

0.945 in (24.0 mm) (56)

1.000 in (25.4 mm) (40)

1.102 in (28.0 mm) (28)

1.181 in (30.0 mm) (112)

1.250 in (31.8 mm) (112)

1.496 in (38.0 mm) (56)

1.500 in (38.1 mm) (220)

1.750 in (44.5 mm) (264)

2.250 in (57.2 mm) (478)

O.D. (D)

0.375 in (9.5 mm) (12)

0.500 in (12.7 mm) (26)

0.590 in (15.0 mm) (60)

0.625 in (15.9 mm) (124)

0.750 in (19.1 mm) (256)

0.787 in (20.0 mm) (49)

0.875 in (22.2 mm) (112)

0.984 in (25.0 mm) (112)

1.000 in (25.4 mm) (364)

1.125 in (28.6 mm) (264)

1.181 in (30.0 mm) (112)

1.250 in (31.8 mm) (528)

1.500 in (38.1 mm) (478)

Material

Aluminum (1248)

303 Stainless Steel (1249)

Bore (B1)

0.0938 in (8)

0.1250 in (36)

0.1563 in (24)

0.1875 in (72)

0.2500 in (112)

0.3125 in (94)

0.3750 in (144)

0.5000 in (142)

0.6250 in (18)

0.7500 in (28)

3 mm (28)

4 mm (49)

5 mm (95)

6 mm (88)

7 mm (84)

8 mm (136)

9 mm (118)

10 mm (170)

11 mm (126)

12 mm (146)

13 mm (30)

14 mm (34)

15 mm (38)

16 mm (20)

17 mm (22)

18 mm (26)

19 mm (26)

20 mm (28)

Bore (B2)

0.0938 in (20)

0.1250 in (68)

0.1563 in (40)

0.1875 in (98)

0.2500 in (182)

0.3125 in (132)

0.3750 in (130)

0.5000 in (42)

0.6250 in (14)

0.7500 in (4)

3 mm (88)

4 mm (63)

5 mm (70)

6 mm (219)

7 mm (150)

8 mm (154)

9 mm (124)

10 mm (104)

11 mm (76)

12 mm (60)

13 mm (26)

14 mm (22)

15 mm (18)

16 mm (12)

17 mm (10)

18 mm (8)

19 mm (6)

20 mm (2)

Keyway

No (1942)

B1 Max Shaft Penetration

0.265 in (4)

0.265 in (6.7 mm) (4)

0.356 in (12)

0.356 in (9.0 mm) (8)

0.377 in (24)

0.377 in (9.6 mm) (36)

0.378 in (9.6 mm) (27)

0.417 in (10.6 mm) (18)

0.422 in (40)

0.422 in (10.7 mm) (64)

0.461 in (11.7 mm) (26)

0.483 in (6)

0.483 in (12.3 mm) (15)

0.499 in (24)

0.499 in (12.7 mm) (48)

0.535 in (13.6 mm) (16)

0.559 in (14.2 mm) (52)

0.579 in (24)

0.579 in (14.7 mm) (60)

0.607 in (12)

0.607 in (15.4 mm) (24)

0.695 in (80)

0.695 in (17.6 mm) (224)

0.717 in (18.2 mm) (26)

0.720 in (12)

0.720 in (18.3 mm) (42)

0.842 in (12)

0.842 in (21.4 mm) (48)

1.075 in (20)

1.075 in (27.3 mm) (88)

6.7 mm (4)

9.0 mm (5)

9.6 mm (48)

10.6 mm (12)

10.7 mm (40)

11.7 mm (30)

12.3 mm (4)

12.7 mm (40)

13.6 mm (12)

14.2 mm (60)

14.7 mm (60)

15.4 mm (19)

17.6 mm (224)

18.2 mm (30)

18.3 mm (56)

21.4 mm (72)

27.3 mm (130)

B2 Max Shaft Penetration

0.265 in (4)

0.265 in (6.7 mm) (4)

0.356 in (12)

0.356 in (9.0 mm) (8)

0.377 in (24)

0.377 in (9.6 mm) (36)

0.378 in (9.6 mm) (27)

0.417 in (10.6 mm) (18)

0.422 in (40)

0.422 in (10.7 mm) (64)

0.461 in (11.7 mm) (26)

0.483 in (6)

0.483 in (12.3 mm) (15)

0.499 in (24)

0.499 in (12.7 mm) (48)

0.535 in (13.6 mm) (16)

0.559 in (14.2 mm) (52)

0.579 in (24)

0.579 in (14.7 mm) (60)

0.607 in (12)

0.607 in (15.4 mm) (24)

0.695 in (80)

0.695 in (17.6 mm) (224)

0.717 in (18.2 mm) (26)

0.720 in (12)

0.720 in (18.3 mm) (42)

0.842 in (12)

0.842 in (21.4 mm) (48)

1.075 in (20)

1.075 in (27.3 mm) (88)

6.7 mm (4)

9.0 mm (5)

9.6 mm (48)

10.6 mm (12)

10.7 mm (40)

11.7 mm (30)

12.3 mm (4)

12.7 mm (40)

13.6 mm (12)

14.2 mm (60)

14.7 mm (60)

15.4 mm (19)

17.6 mm (224)

18.2 mm (30)

18.3 mm (56)

21.4 mm (72)

27.3 mm (130)

Bore Tolerance

+0.001 in / -0.000 in (270)

+0.001 in / -0.000 in (+0.025 mm / -0.000 mm) (826)

+0.025 mm / -0.000 mm (846)

Screw Material

Alloy Steel (1936)

Stainless Steel (6)

Screw Finish

Black Oxide (1942)

ISO 9001:2015

Certified (1942)

REACH

Compliant (1942)

RoHS3

Compliant (1942)

Conflict Minerals

Compliant (1942)

Tariff Code

8483.60.8000 (1942)

Product Group

F-Series Six Beam Coupling (560)

P-Series 4 Beam Couplings Clamp (525)

P-Series 4 Beam Couplings Set Screw (524)

4 Beam Couplings Clamp (170)

4 Beam Couplings Set Screw (163)

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Bore (B1): high to low
Bore (B2): low to high
Bore (B2): high to low
O.D. (D): low to high
O.D. (D): high to low
Length (L): low to high
Length (L): high to low

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0.1250 in

0.500 in (12.7 mm)

PSR8-2-2-A

Ruland Brand / 1/8" X 1/8" Bores / 0.500" Od, 0.750" Length / Four Beam Coupling / Aluminum Set Screw Style

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$42.05 / each

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Product Added to Cart and Back Orders

Product Added to Back Orders

15 items added to cart, can be ordered and shipped today.
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Filters

Brand

Length (L)

O.D. (D)

Material

Bore (B1)

Bore (B2)

Keyway

B1 Max Shaft Penetration

B2 Max Shaft Penetration

Bore Tolerance

Screw Material

Screw Finish

ISO 9001:2015

REACH

RoHS3

Conflict Minerals

Tariff Code

Product Group

Bore (B1)

Bore (B2)

O.D. (D)

Length (L)

Product

Files

Price

PSR8-1.5-1.5-SS

$120.14 / each

PSR6-1.5-1.5-A

$44.02 / each

PSR6-1.5-1.5-SS

$117.86 / each

PSR8-1.5-1.5-A

$42.05 / each

PCR6-1.5-1.5-A

$56.24 / each

PCR6-1.5-1.5-SS

$128.78 / each

PCR8-1.5-1.5-A

$50.22 / each

PCR8-1.5-1.5-SS

$131.25 / each

PSR8-2-1.5-A

$42.05 / each

PSR8-2-1.5-SS

$120.14 / each

PCR12-1/8"-3MM-A

$49.44 / each

PSR8-2-2-A

$42.05 / each

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