Pocket Watch Database

Waltham Balance Staffs

The delicate balance staff is one of the parts most frequently destroyed when a watch is dropped or sustains a forceful blow. The tiny pivots on each end of the balance staff are prone to bend and sheer under unreasonable force. When the balance staff is broken, it must be replaced by a staff matching the same dimensions as the original. If a factory-sized staff cannot be purchased, one must be fabricated using a watchmakers lathe.

When purchashing a replacement staff, pay attention to the avialable pivot sizes available. Many manufacturers also slightly modified the staff simensions, leading to some part number available in different variations (small/large collet, old/new style, short/long hub, etc). Keep this in mind when evaluating the avaialble staffs for a watch movement. It is recommended that the old staff be removed a measured prior to purchasing a new staff. Replacing a staff is a skilled operation requiring special tools. Please contacts a reputable watchmaker that specializes in antique watches if you are not equipped to replace a balance staff.


Movement Size   Part Number   Length (mm)   Balance Seat (mm)   Hairspring Seat (mm)   Roller Seat (mm)   Hub (mm)   Pivot Sizes   Image Purchase on eBay
37
Models: 1910
28210 6 1.24 0.91 0.6 1.01 12-13 Buy Now
37
Models: 1910
28210 6 1.3 0.91 0.6 1.01 14 Buy Now
37
Models: 1910
28212 6 1.45 0.91 0.6 1.01 13-14 Buy Now
37
Models: 1910
28213 6 1.3 0.7 0.6 1.25 10 Buy Now
If the Waltham 28213 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
37 28560 6 1.3 0.73 0.6 1 Buy Now
22 22230 4.42 1.12 0.73 0.58 0.45 Buy Now
If the Waltham 22230 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
18
Models: 1857
277 5.6 1.25 1.05 0.61 0.41 Buy Now
18
Models: 1857
278 5.6 1.25 - 0.61 1.03 Buy Now
18
Models: 1857
279 5.7 1.25 1.6 0.61 2.14 Buy Now
18
Models: 1857
280 5.6 - - - - Buy Now
18
Models: 1857
281 5.6 1.25 1.03 0.6 1.25 Buy Now
18 450 6.5 1.3 0.92 0.6 1.34 Buy Now
18 450a 5.85 1.25 0.91 0.6 1.36 Buy Now
If the Waltham 450a staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
18
Models: 1883
1364 5.85 1.25 0.91 0.6 1.35 12-14 Buy Now
If the Waltham 1364 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
18
Models: 1883
1365 5.85 1.25 0.91 0.6 1.35 12-14 Buy Now
If the Waltham 1365 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
18
Models: 1892
1703A 6 1.25 0.91 0.6 1 10-12 Buy Now
18
Models: 1892
1703 5.7 1.25 0.91 0.6 0.7 11-12 Buy Now
16
Models: 1868, 1872
4251/4252 6.1 1.23 0.91 0.6 0.8 Buy Now
16
Models: 1868, 1872
4253/4254 6.1 1.3 0.91 0.6 0.8 Buy Now
16 4430/4430A 4.88 1.45 0.92 0.6 T Buy Now
16
Models: 1888
2844 5.85 1.25 0.91 0.6 0.36 11-13 Buy Now
16
Models: 1888
4860 (Square Hub) 5.4 Friction 0.93 0.6 Friction 12-14 Buy Now
16
Models: 1899
4861 (Taper Hub) 5.4 Friction 0.93 0.59 Friction 10-12 Buy Now
14
Models: 1874, 1884
7354/7355 6.25 1.25 0.92 0.6 0.75 Buy Now
If the Waltham 7354/7355 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.
10/14 77677 2.9 Friction 0.72 0.56 Friction 10-11 Buy Now
12
Models: 1924
7865 3.7 Friction 0.72 0.54 Friction 9-11 Buy Now
12 7864 3.7 1.3 0.71 0.54 0.48 10 Buy Now
12 8143 (Taper Hub) 4.55 Friction 0.72 0.55 Friction 9-11 Buy Now
8
Models: 1873, 1889
12318 4.73 1.24 0.91 0.57 0.44 Buy Now
6
Models: 1873, 1889
12318 4.73 1.24 0.91 0.57 0.44 Buy Now
6/12
Models: 1890, 1894
8142/13220 4.55 1 0.7 0.55 0.44 9-11 Buy Now
10 1970A 4.65 1.24 0.97 0.59 0.35 Buy Now
8 12317 4.7 1.24 0.92 0.57 0.43 Buy Now
6 13219 4.6 1.25 0.81 0.6 0.46 10-11 Buy Now
If the Waltham 13219 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.

Models: 1891
19365 3.95 1.25 0.71 0.6 0.32 9-10 Buy Now

Models: 1891
19369 3.95 1.02 0.71 0.55 0.3 9-11 Buy Now
If the Waltham 19369 staff is unavailable, there might be interchangeable alternatives. See the interchangeable list.

Models: 1900
20207 3.95 Friction - - Friction 8-10 Buy Now

Models: 1900, 1907
20208 3.95 Friction 0.55 0.42 Friction 8-10 Buy Now
3/0
Models: 1900, 1907
20208 3.95 Friction 0.55 0.42 Friction 8-10 Buy Now
Data Source: Swartchild Balance Staff Charts and Company Material Catalogs