Clamp-style shaft collars, one-piece and two-piece (Ruland MCL / MSP metric 3–50 mm, CL / SP inch 1/8–2 in): bore, OD, width, screw, torque + ring models — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/shaft-collars-clamp-ruland/ (sheet CC BY 4.0) Basis: Ruland's catalogue tables for one-piece (MCL, CL) and two-piece (MSP, SP) clamp collars, a Ruland data sheet for M3 collars, Ruland.com listing pages (names and sizes) and distributor titles as cross-checks; ring envelopes as files Catalog version: 2026-10-20 Overall (mm): length 76.19999999999999, width 76.19999999999999, height 17.475199999999997 - Metric rows: Ruland MCL (one-piece) and MSP (two-piece) clamp collars, bore 3 to 50 mm (the catalogue continues to 80 mm). The catalogue (a distributor-hosted copy of Ruland's PDF) prints the same bore, OD, width and screw for both forms; the table gives one row per bore for both part numbers. Inch rows: CL (one-piece) and SP (two-piece), bore 1/8 to 2 in (the catalogue continues to 3 in for CL and 4 in for SP). Screw sizes and seating torques are the catalogue's (alloy-steel / stainless: N·m for metric, lb·in for inch). - Cross-checks: Ruland.com's MCL listing shows MCL-32 (54 mm OD, 15 wide), MCL-34 to 36 (57 / 15) and MCL-38 (60 / 15); the Ruland data sheet for MCL-9-F gives OD 24, width 9, M3 × 10 screw, 2.1 N·m, hex key 2.5 mm, screw location 8.51, clearance Ø26.3 max, bore tolerance +0.050 / +0.012 mm, shaft tolerance +0 / −0.013 mm (its MCLD-10-F page repeats the same figures); distributor titles for MCL-10 (bore 10, OD 24, W 9), MCL-50 (bore 50, OD 78, W 19), MSP-48 (OD 78, W 19) and an OD 34, W 13 one-piece collar agree. The inch CL / SP table has no second source in this fetch. - MCLE: Ruland's 'international series' has inch bores with metric OD and width (for example a 1 in bore, 45 mm OD, 15 mm wide, MCL-16E); the Ruland web page lists sizes but no screw. A distributor title for MCL-16E-SS (bore 1.0000, OD 45 mm) agrees. The number of clamp screws on the two-piece forms is not stated in the pages read. - Files: plain rings at the published bore, OD and width (slit and screw hole are not modelled: the slit width is not published, so a split ring would be invented). The screw and torque are on the table. Ruland offers CAD per part on its site; linked, not copied. Set-screw collars: shaft-collars-clips-and-shafts. series part (one-piece / two-piece) bore OD width clamp screw seating torque (alloy / stainless) note metric MCL-3 / MSP-3 3 mm 16 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-4 / MSP-4 4 mm 16 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-5 / MSP-5 5 mm 16 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-6 / MSP-6 6 mm 16 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-7 / MSP-7 7 mm 18 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-8 / MSP-8 8 mm 18 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-9 / MSP-9 9 mm 24 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-10 / MSP-10 10 mm 24 mm 9 mm M3 2.10 / 1.10 N·m metric MCL-11 / MSP-11 11 mm 28 mm 11 mm M4 4.60 / 2.50 N·m metric MCL-12 / MSP-12 12 mm 28 mm 11 mm M4 4.60 / 2.50 N·m metric MCL-13 / MSP-13 13 mm 30 mm 11 mm M4 4.60 / 2.50 N·m metric MCL-14 / MSP-14 14 mm 30 mm 11 mm M4 4.60 / 2.50 N·m metric MCL-15 / MSP-15 15 mm 34 mm 13 mm M5 9.50 / 5.40 N·m metric MCL-16 / MSP-16 16 mm 34 mm 13 mm M5 9.50 / 5.40 N·m metric MCL-17 / MSP-17 17 mm 36 mm 13 mm M5 9.50 / 5.40 N·m metric MCL-18 / MSP-18 18 mm 36 mm 13 mm M5 9.50 / 5.40 N·m metric MCL-19 / MSP-19 19 mm 40 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-20 / MSP-20 20 mm 40 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-21 / MSP-21 21 mm 42 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-22 / MSP-22 22 mm 42 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-23 / MSP-23 23 mm 45 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-24 / MSP-24 24 mm 45 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-25 / MSP-25 25 mm 45 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-26 / MSP-26 26 mm 48 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-28 / MSP-28 28 mm 48 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-30 / MSP-30 30 mm 54 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-32 / MSP-32 32 mm 54 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-34 / MSP-34 34 mm 57 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-35 / MSP-35 35 mm 57 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-36 / MSP-36 36 mm 57 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-38 / MSP-38 38 mm 60 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-40 / MSP-40 40 mm 60 mm 15 mm M6 16.00 / 9.60 N·m metric MCL-42 / MSP-42 42 mm 73 mm 19 mm M8 39.00 / 23.00 N·m metric MCL-45 / MSP-45 45 mm 73 mm 19 mm M8 39.00 / 23.00 N·m metric MCL-48 / MSP-48 48 mm 78 mm 19 mm M8 39.00 / 23.00 N·m metric MCL-50 / MSP-50 50 mm 78 mm 19 mm M8 39.00 / 23.00 N·m inch CL-2 / SP-2 0.1250 in (3.17 mm) 5/8 in (15.88 mm) 0.281 in (7.14 mm) #4-40 15 / 8 lb·in inch CL-3 / SP-3 0.1875 in (4.76 mm) 5/8 in (15.88 mm) 0.281 in (7.14 mm) #4-40 15 / 8 lb·in inch CL-4 / SP-4 0.2500 in (6.35 mm) 5/8 in (15.88 mm) 0.281 in (7.14 mm) #4-40 15 / 8 lb·in inch CL-5 / SP-5 0.3125 in (7.94 mm) 11/16 in (17.46 mm) 0.281 in (7.14 mm) #4-40 15 / 8 lb·in inch CL-6 / SP-6 0.3750 in (9.52 mm) 7/8 in (22.22 mm) 0.343 in (8.71 mm) #6-32 28 / 15 lb·in inch CL-7 / SP-7 0.4375 in (11.11 mm) 15/16 in (23.81 mm) 0.343 in (8.71 mm) #6-32 28 / 15 lb·in inch CL-8 / SP-8 0.5000 in (12.70 mm) 1-1/8 in (28.57 mm) 0.406 in (10.31 mm) #8-32 49 / 28 lb·in inch CL-9 / SP-9 0.5625 in (14.29 mm) 1-1/4 in (31.75 mm) 0.437 in (11.10 mm) #10-32 76 / 45 lb·in inch CL-10 / SP-10 0.6250 in (15.88 mm) 1-5/16 in (33.34 mm) 0.437 in (11.10 mm) #10-32 76 / 45 lb·in inch CL-11 / SP-11 0.6875 in (17.46 mm) 1-3/8 in (34.92 mm) 0.437 in (11.10 mm) #10-32 76 / 45 lb·in inch CL-12 / SP-12 0.7500 in (19.05 mm) 1-1/2 in (38.10 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-13 / SP-13 0.8125 in (20.64 mm) 1-5/8 in (41.27 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-14 / SP-14 0.8750 in (22.22 mm) 1-5/8 in (41.27 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-15 / SP-15 0.9375 in (23.81 mm) 1-3/4 in (44.45 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-16 / SP-16 1.0000 in (25.40 mm) 1-3/4 in (44.45 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-17 / SP-17 1.0625 in (26.99 mm) 1-7/8 in (47.62 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-18 / SP-18 1.1250 in (28.57 mm) 1-7/8 in (47.62 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-19 / SP-19 1.1875 in (30.16 mm) 2-1/16 in (52.39 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-20 / SP-20 1.2500 in (31.75 mm) 2-1/16 in (52.39 mm) 0.500 in (12.70 mm) 1/4-28 170 / 110 lb·in inch CL-21 / SP-21 1.3125 in (33.34 mm) 2-1/8 in (53.97 mm) 0.563 in (14.30 mm) 1/4-28 170 / 110 lb·in inch CL-22 / SP-22 1.3750 in (34.92 mm) 2-1/4 in (57.15 mm) 0.563 in (14.30 mm) 1/4-28 170 / 110 lb·in inch CL-23 / SP-23 1.4375 in (36.51 mm) 2-1/4 in (57.15 mm) 0.563 in (14.30 mm) 1/4-28 170 / 110 lb·in inch CL-24 / SP-24 1.5000 in (38.10 mm) 2-3/8 in (60.32 mm) 0.563 in (14.30 mm) 1/4-28 170 / 110 lb·in inch CL-25 / SP-25 1.5625 in (39.69 mm) 2-3/8 in (60.32 mm) 0.563 in (14.30 mm) 1/4-28 170 / 110 lb·in inch CL-26 / SP-26 1.6250 in (41.27 mm) 2-5/8 in (66.67 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-27 / SP-27 1.6875 in (42.86 mm) 2-3/4 in (69.85 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-28 / SP-28 1.7500 in (44.45 mm) 2-3/4 in (69.85 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-29 / SP-29 1.8125 in (46.04 mm) 2-7/8 in (73.02 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-30 / SP-30 1.8750 in (47.62 mm) 2-7/8 in (73.02 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-31 / SP-31 1.9375 in (49.21 mm) 3 in (76.20 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch CL-32 / SP-32 2.0000 in (50.80 mm) 3 in (76.20 mm) 0.688 in (17.48 mm) 5/16-24 325 / 190 lb·in inch bore, metric OD (MCLE international series) MCL-4E 0.2500 in (6.35 mm) 18 mm 9 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-5E 0.3125 in (7.94 mm) 18 mm 9 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-6E 0.3750 in (9.52 mm) 24 mm 9 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-7E 0.4375 in (11.11 mm) 28 mm 11 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-8E 0.5000 in (12.70 mm) 30 mm 11 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-10E 0.6250 in (15.88 mm) 34 mm 13 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-12E 0.7500 in (19.05 mm) 40 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-14E 0.8750 in (22.22 mm) 42 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-15E 0.9375 in (23.81 mm) 45 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-16E 1.0000 in (25.40 mm) 45 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-18E 1.1250 in (28.57 mm) 48 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-20E 1.2500 in (31.75 mm) 54 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-22E 1.3750 in (34.92 mm) 57 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-23E 1.4375 in (36.51 mm) 60 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-24E 1.5000 in (38.10 mm) 60 mm 15 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-28E 1.7500 in (44.45 mm) 73 mm 19 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-31E 1.9375 in (49.21 mm) 78 mm 19 mm not listed on the page — Ruland web page inch bore, metric OD (MCLE international series) MCL-32E 2.0000 in (50.80 mm) 82 mm 19 mm not listed on the page — Ruland web page data sheet (MCL-9-F, MCLD-10-F), M3 collars 9 and 10 mm bore bore tolerance +0.050 / +0.012 mm 24 mm 9 mm M3 × 10 forged clamp screw, hex key 2.5 mm 2.1 N·m screw location R 8.51 mm; clearance diameter C max 26.3 mm; shaft tolerance +0 / −0.013 mm Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Ruland Manufacturing (catalogue PDF, third-party host): Shaft collars & couplings catalogue: one- and two-piece clamp collars, inch (CL, SP) and metric (MCL, MSP): bore, OD, width, screw, seating torque — web — Maker catalogue as hosted by a distributor; numbers only — https://lager-techniek.eu/Ruland%20Collars.pdf - PIB Sales (Ruland data sheet): MCL-9-F and MCLD-10-F Ruland data sheets: bore 9 / 10 mm, OD 24, width 9, M3 × 10 screw, 2.1 N·m, screw location 8.51, clearance Ø26.3, bore and shaft tolerances — web — Maker data sheet; numbers only — https://pibsales.com/wp-content/uploads/pdf/MCL-9-F-Ruland-Bearing-PIB.pdf - Ruland Manufacturing (official): One-piece clamp collars, metric (MCL): part numbers, bore, OD, width, CAD per part — web, CAD per part — Maker / distributor page; dimensions are facts [verify license at link] — https://www.ruland.com/shaft-collars/one-piece-shaft-collar/mcl-metric.html - Ruland Manufacturing (official): MCLE international series, 303 stainless: inch bore, metric OD and width — web, CAD per part — Maker / distributor page; dimensions are facts [verify license at link] — https://www.ruland.com/shaft-collars/international-series/mcle-international-series/material-303_stainless_steel.html Free files (CC BY 4.0, Xem Studio; STEP + STL, 23 parts): https://xemstudio.com/files/hardware/shaft-collars-clamp-ruland/index.json API: https://xemstudio.com/api/geometry?object=shaft-collars-clamp-ruland